h5py throwing errors on yt-4.0 branch
# Bug report 

**Bug summary**

I've noticed the following errors on appveyor on all of the recent PRs that have been submitted to the `yt-4.0` branch, even those that definitely don't touch this part of the codebase (like yt-project/yt#2396). I haven't been able to reproduce it locally and I think in order to do a deeper debug I'll need to log on to the appveyor machines. 

It looks to me like in the `test_image_array_hdf5` we use `unyt/array.py` to write `d.attrs[k]=v` to hdf5 and then we get an issue from h5py. 

I'm happy to work with people to dive into this, but since it's popping up in a couple of places we should probably have an issue for it. 

```
======================================================================
ERROR: test_image_array_hdf5 (yt.data_objects.tests.test_image_array.TestImageArray)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\projects\yt\yt\data_objects\tests\test_image_array.py", line 71, in test_image_array_hdf5
    im_arr.save('test_3d_ImageArray', png=False)
  File "C:\projects\yt\yt\data_objects\image_array.py", line 385, in save
    self.write_hdf5("%s.h5" % filename, dataset_name)
  File "C:\projects\yt\yt\data_objects\image_array.py", line 112, in write_hdf5
    info=self.info)
  File "C:\Miniconda36-x64\envs\test\lib\site-packages\unyt\array.py", line 1347, in write_hdf5
    d.attrs[k] = v
  File "h5py\_objects.pyx", line 54, in h5py._objects.with_phil.wrapper
  File "h5py\_objects.pyx", line 55, in h5py._objects.with_phil.wrapper
  File "C:\Miniconda36-x64\envs\test\lib\site-packages\h5py\_hl\attrs.py", line 100, in __setitem__
    self.create(name, data=value)
  File "C:\Miniconda36-x64\envs\test\lib\site-packages\h5py\_hl\attrs.py", line 201, in create
    attr = h5a.create(self._id, self._e(tempname), htype, space)
  File "h5py\_objects.pyx", line 54, in h5py._objects.with_phil.wrapper
  File "h5py\_objects.pyx", line 55, in h5py._objects.with_phil.wrapper
  File "h5py\h5a.pyx", line 47, in h5py.h5a.create
RuntimeError: Unable to create attribute (object header message is too large)
======================================================================
ERROR: test_image_array_hdf5 (yt.data_objects.tests.test_image_array.TestImageArray)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\projects\yt\yt\data_objects\tests\test_image_array.py", line 129, in tearDown
    shutil.rmtree(self.tmpdir)
  File "C:\Miniconda36-x64\envs\test\lib\shutil.py", line 500, in rmtree
    return _rmtree_unsafe(path, onerror)
  File "C:\Miniconda36-x64\envs\test\lib\shutil.py", line 395, in _rmtree_unsafe
    onerror(os.unlink, fullname, sys.exc_info())
  File "C:\Miniconda36-x64\envs\test\lib\shutil.py", line 393, in _rmtree_unsafe
    os.unlink(fullname)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\appveyor\\AppData\\Local\\Temp\\1\\tmpa6n29kpq\\test_3d_ImageArray.h5'
----------------------------------------------------------------------
```




diff --git a/tests/report_failed_answers.py b/tests/report_failed_answers.py
index 280fcb89b..59ceab60b 100644
--- a/tests/report_failed_answers.py
+++ b/tests/report_failed_answers.py
@@ -4,13 +4,6 @@ on cloud platforms like Travis
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2018, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 from __future__ import print_function
 
diff --git a/yt/api.py b/yt/api.py
index dfff4b497..d9ec82151 100644
--- a/yt/api.py
+++ b/yt/api.py
@@ -5,10 +5,3 @@ API for yt
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/_skeleton/__init__.py b/yt/frontends/_skeleton/__init__.py
index eed8e0825..c8a618b34 100644
--- a/yt/frontends/_skeleton/__init__.py
+++ b/yt/frontends/_skeleton/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends._skeleton
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/ahf/__init__.py b/yt/frontends/ahf/__init__.py
index 56ae88e1e..45cf0d773 100644
--- a/yt/frontends/ahf/__init__.py
+++ b/yt/frontends/ahf/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends.ahf
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2017, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/art/__init__.py b/yt/frontends/art/__init__.py
index 71b1f7d35..8481d7b4d 100644
--- a/yt/frontends/art/__init__.py
+++ b/yt/frontends/art/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends.art
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/artio/__init__.py b/yt/frontends/artio/__init__.py
index 5b2013d38..17195075c 100644
--- a/yt/frontends/artio/__init__.py
+++ b/yt/frontends/artio/__init__.py
@@ -6,10 +6,3 @@ API for yt.frontends.artio
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/athena/definitions.py b/yt/frontends/athena/definitions.py
index eed306ed5..307b63a96 100644
--- a/yt/frontends/athena/definitions.py
+++ b/yt/frontends/athena/definitions.py
@@ -5,10 +5,3 @@ Various definitions for various other modules and routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/athena_pp/definitions.py b/yt/frontends/athena_pp/definitions.py
index eed306ed5..307b63a96 100644
--- a/yt/frontends/athena_pp/definitions.py
+++ b/yt/frontends/athena_pp/definitions.py
@@ -5,10 +5,3 @@ Various definitions for various other modules and routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/boxlib/__init__.py b/yt/frontends/boxlib/__init__.py
index cab6e807b..07fa13369 100644
--- a/yt/frontends/boxlib/__init__.py
+++ b/yt/frontends/boxlib/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends.boxlib
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/exodus_ii/__init__.py b/yt/frontends/exodus_ii/__init__.py
index 7b8e0f1eb..aabf7b36d 100644
--- a/yt/frontends/exodus_ii/__init__.py
+++ b/yt/frontends/exodus_ii/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends.exodus_ii
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/flash/__init__.py b/yt/frontends/flash/__init__.py
index 0d5dbd749..40d9d41e9 100644
--- a/yt/frontends/flash/__init__.py
+++ b/yt/frontends/flash/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends.flash
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/gadget_fof/__init__.py b/yt/frontends/gadget_fof/__init__.py
index 6a83f0ac7..04ebe5cd2 100644
--- a/yt/frontends/gadget_fof/__init__.py
+++ b/yt/frontends/gadget_fof/__init__.py
@@ -6,10 +6,3 @@ API for HaloCatalog frontend.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/gamer/__init__.py b/yt/frontends/gamer/__init__.py
index c74ffcde5..6761e2147 100644
--- a/yt/frontends/gamer/__init__.py
+++ b/yt/frontends/gamer/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends.gamer
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/gdf/definitions.py b/yt/frontends/gdf/definitions.py
index eed306ed5..307b63a96 100644
--- a/yt/frontends/gdf/definitions.py
+++ b/yt/frontends/gdf/definitions.py
@@ -5,10 +5,3 @@ Various definitions for various other modules and routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/halo_catalog/__init__.py b/yt/frontends/halo_catalog/__init__.py
index 6a83f0ac7..04ebe5cd2 100644
--- a/yt/frontends/halo_catalog/__init__.py
+++ b/yt/frontends/halo_catalog/__init__.py
@@ -6,10 +6,3 @@ API for HaloCatalog frontend.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/moab/__init__.py b/yt/frontends/moab/__init__.py
index 00bd2a298..fcc280c5b 100644
--- a/yt/frontends/moab/__init__.py
+++ b/yt/frontends/moab/__init__.py
@@ -5,10 +5,3 @@ Empty __init__.py file.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/open_pmd/__init__.py b/yt/frontends/open_pmd/__init__.py
index cf28545aa..2c656b643 100644
--- a/yt/frontends/open_pmd/__init__.py
+++ b/yt/frontends/open_pmd/__init__.py
@@ -5,11 +5,3 @@ API for yt.frontends.open_pmd
 
 """
 
-# -----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-# Copyright (c) 2015, Daniel Grassinger (HZDR)
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-# -----------------------------------------------------------------------------
diff --git a/yt/frontends/owls_subfind/__init__.py b/yt/frontends/owls_subfind/__init__.py
index 6a83f0ac7..04ebe5cd2 100644
--- a/yt/frontends/owls_subfind/__init__.py
+++ b/yt/frontends/owls_subfind/__init__.py
@@ -6,10 +6,3 @@ API for HaloCatalog frontend.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/ramses/__init__.py b/yt/frontends/ramses/__init__.py
index bde2b7293..1d8841fe2 100644
--- a/yt/frontends/ramses/__init__.py
+++ b/yt/frontends/ramses/__init__.py
@@ -5,10 +5,3 @@ API for yt.frontends.ramses
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/rockstar/__init__.py b/yt/frontends/rockstar/__init__.py
index 6e14c8d25..ff6a8d860 100644
--- a/yt/frontends/rockstar/__init__.py
+++ b/yt/frontends/rockstar/__init__.py
@@ -6,10 +6,3 @@ API for Rockstar frontend.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/sdf/__init__.py b/yt/frontends/sdf/__init__.py
index 2483a8985..0b0b7c691 100644
--- a/yt/frontends/sdf/__init__.py
+++ b/yt/frontends/sdf/__init__.py
@@ -6,10 +6,3 @@ __init__ for yt.frontends.sdf
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/sph/__init__.py b/yt/frontends/sph/__init__.py
index 63fa39200..377e37fa8 100644
--- a/yt/frontends/sph/__init__.py
+++ b/yt/frontends/sph/__init__.py
@@ -6,10 +6,3 @@ API for yt.frontends.gadget
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/sph/api.py b/yt/frontends/sph/api.py
index e99f3a827..8177a1f3f 100644
--- a/yt/frontends/sph/api.py
+++ b/yt/frontends/sph/api.py
@@ -6,10 +6,3 @@ API for general SPH frontend machinery
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/frontends/ytdata/__init__.py b/yt/frontends/ytdata/__init__.py
index a7c3f22f5..7cccc849a 100644
--- a/yt/frontends/ytdata/__init__.py
+++ b/yt/frontends/ytdata/__init__.py
@@ -6,10 +6,3 @@ API for ytData frontend.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/geometry/fake_octree.pyx b/yt/geometry/fake_octree.pyx
index 7f35289b8..0fbe61f7e 100644
--- a/yt/geometry/fake_octree.pyx
+++ b/yt/geometry/fake_octree.pyx
@@ -6,13 +6,6 @@ Make a fake octree, deposit particle at every leaf
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 from libc.stdlib cimport malloc, free, rand, RAND_MAX
 cimport numpy as np
diff --git a/yt/geometry/grid_container.pxd b/yt/geometry/grid_container.pxd
index d8d685030..8c63731ab 100644
--- a/yt/geometry/grid_container.pxd
+++ b/yt/geometry/grid_container.pxd
@@ -5,13 +5,6 @@ Matching points on the grid to specific grids
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/geometry/grid_container.pyx b/yt/geometry/grid_container.pyx
index 8fc6419d8..73f995a91 100644
--- a/yt/geometry/grid_container.pyx
+++ b/yt/geometry/grid_container.pyx
@@ -5,13 +5,6 @@ Matching points on the grid to specific grids
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/geometry/grid_visitors.pxd b/yt/geometry/grid_visitors.pxd
index d9f953b3b..aa98e3b05 100644
--- a/yt/geometry/grid_visitors.pxd
+++ b/yt/geometry/grid_visitors.pxd
@@ -6,13 +6,6 @@ Grid visitor definitions file
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 
diff --git a/yt/geometry/grid_visitors.pyx b/yt/geometry/grid_visitors.pyx
index 5f282bb2a..5c77bfacf 100644
--- a/yt/geometry/grid_visitors.pyx
+++ b/yt/geometry/grid_visitors.pyx
@@ -6,13 +6,6 @@ Grid visitor functions
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 cimport cython
diff --git a/yt/geometry/oct_container.pxd b/yt/geometry/oct_container.pxd
index 7f2d0e8d2..978aabd4c 100644
--- a/yt/geometry/oct_container.pxd
+++ b/yt/geometry/oct_container.pxd
@@ -6,13 +6,6 @@ Oct definitions file
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport cython
 cimport numpy as np
diff --git a/yt/geometry/oct_container.pyx b/yt/geometry/oct_container.pyx
index f9908ff7f..0fabf9b19 100644
--- a/yt/geometry/oct_container.pyx
+++ b/yt/geometry/oct_container.pyx
@@ -6,13 +6,6 @@ Oct container
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport cython
 cimport numpy as np
diff --git a/yt/geometry/oct_visitors.pxd b/yt/geometry/oct_visitors.pxd
index 2993301db..142adad60 100644
--- a/yt/geometry/oct_visitors.pxd
+++ b/yt/geometry/oct_visitors.pxd
@@ -6,13 +6,6 @@ Oct visitor definitions file
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 
diff --git a/yt/geometry/oct_visitors.pyx b/yt/geometry/oct_visitors.pyx
index a055690cc..016b601ba 100644
--- a/yt/geometry/oct_visitors.pyx
+++ b/yt/geometry/oct_visitors.pyx
@@ -6,13 +6,6 @@ Oct visitor functions
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport cython
 cimport numpy
diff --git a/yt/geometry/particle_deposit.pxd b/yt/geometry/particle_deposit.pxd
index 4808e7e8c..6e2fd4966 100644
--- a/yt/geometry/particle_deposit.pxd
+++ b/yt/geometry/particle_deposit.pxd
@@ -6,13 +6,6 @@ Particle Deposition onto Octs
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 import numpy as np
diff --git a/yt/geometry/particle_deposit.pyx b/yt/geometry/particle_deposit.pyx
index 4413ec784..92d307c92 100644
--- a/yt/geometry/particle_deposit.pyx
+++ b/yt/geometry/particle_deposit.pyx
@@ -6,13 +6,6 @@ Particle Deposition onto Cells
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 import numpy as np
diff --git a/yt/geometry/particle_oct_container.pyx b/yt/geometry/particle_oct_container.pyx
index 5b8c05877..9aeec58da 100644
--- a/yt/geometry/particle_oct_container.pyx
+++ b/yt/geometry/particle_oct_container.pyx
@@ -6,13 +6,6 @@ Oct container tuned for Particles
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 from oct_container cimport OctreeContainer, Oct, OctInfo, ORDER_MAX, \
     SparseOctreeContainer, OctKey, OctAllocationContainer
diff --git a/yt/geometry/particle_smooth.pxd b/yt/geometry/particle_smooth.pxd
index 906e4f382..2240aef6c 100644
--- a/yt/geometry/particle_smooth.pxd
+++ b/yt/geometry/particle_smooth.pxd
@@ -6,13 +6,6 @@ Particle Deposition onto Octs
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 import numpy as np
diff --git a/yt/geometry/particle_smooth.pyx b/yt/geometry/particle_smooth.pyx
index a94d5d0f8..8fac3179a 100644
--- a/yt/geometry/particle_smooth.pyx
+++ b/yt/geometry/particle_smooth.pyx
@@ -6,13 +6,6 @@ Particle smoothing in cells
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 import numpy as np
diff --git a/yt/geometry/selection_routines.pxd b/yt/geometry/selection_routines.pxd
index cb81331a1..81d02dbb6 100644
--- a/yt/geometry/selection_routines.pxd
+++ b/yt/geometry/selection_routines.pxd
@@ -6,13 +6,6 @@ Geometry selection routine imports.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 from oct_visitors cimport Oct, OctVisitor
diff --git a/yt/geometry/selection_routines.pyx b/yt/geometry/selection_routines.pyx
index 9ee30a4fd..2145fba87 100644
--- a/yt/geometry/selection_routines.pyx
+++ b/yt/geometry/selection_routines.pyx
@@ -6,13 +6,6 @@ Geometry selection routines.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/amr_kdtree/__init__.py b/yt/utilities/amr_kdtree/__init__.py
index 98e06f34e..06cde376c 100644
--- a/yt/utilities/amr_kdtree/__init__.py
+++ b/yt/utilities/amr_kdtree/__init__.py
@@ -3,10 +3,3 @@ Initialize amr_kdtree
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/utilities/answer_testing/__init__.py b/yt/utilities/answer_testing/__init__.py
index 9e417ac96..81c61259c 100644
--- a/yt/utilities/answer_testing/__init__.py
+++ b/yt/utilities/answer_testing/__init__.py
@@ -5,10 +5,3 @@ The components of the Enzo testing mechanism
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/utilities/api.py b/yt/utilities/api.py
index eed2c947b..7c097dfc5 100644
--- a/yt/utilities/api.py
+++ b/yt/utilities/api.py
@@ -5,10 +5,3 @@ API for yt.utilities
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/utilities/lib/allocation_container.pxd b/yt/utilities/lib/allocation_container.pxd
index 9a20ca088..25c6eb6f6 100644
--- a/yt/utilities/lib/allocation_container.pxd
+++ b/yt/utilities/lib/allocation_container.pxd
@@ -5,13 +5,6 @@ An allocation container and memory pool
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 from libc.stdlib cimport malloc, free, realloc
diff --git a/yt/utilities/lib/allocation_container.pyx b/yt/utilities/lib/allocation_container.pyx
index 1f58ccc73..4bb61517c 100644
--- a/yt/utilities/lib/allocation_container.pyx
+++ b/yt/utilities/lib/allocation_container.pyx
@@ -5,13 +5,6 @@ An allocation container and memory pool
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 import numpy as np
diff --git a/yt/utilities/lib/alt_ray_tracers.pyx b/yt/utilities/lib/alt_ray_tracers.pyx
index 099790fab..1678747b5 100644
--- a/yt/utilities/lib/alt_ray_tracers.pyx
+++ b/yt/utilities/lib/alt_ray_tracers.pyx
@@ -5,13 +5,6 @@
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/amr_kdtools.pxd b/yt/utilities/lib/amr_kdtools.pxd
index 937c2656f..97eada367 100644
--- a/yt/utilities/lib/amr_kdtools.pxd
+++ b/yt/utilities/lib/amr_kdtools.pxd
@@ -5,13 +5,6 @@ AMR kD-Tree Cython Tools
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 
diff --git a/yt/utilities/lib/amr_kdtools.pyx b/yt/utilities/lib/amr_kdtools.pyx
index afa34f20e..d6d7249b7 100644
--- a/yt/utilities/lib/amr_kdtools.pyx
+++ b/yt/utilities/lib/amr_kdtools.pyx
@@ -5,13 +5,6 @@ AMR kD-Tree Cython Tools
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/basic_octree.pyx b/yt/utilities/lib/basic_octree.pyx
index 0461dbfae..ec9a0402a 100644
--- a/yt/utilities/lib/basic_octree.pyx
+++ b/yt/utilities/lib/basic_octree.pyx
@@ -5,13 +5,6 @@ A refine-by-two AMR-specific octree
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 
 import numpy as np
diff --git a/yt/utilities/lib/bitarray.pxd b/yt/utilities/lib/bitarray.pxd
index ec189072c..61e6dc75f 100644
--- a/yt/utilities/lib/bitarray.pxd
+++ b/yt/utilities/lib/bitarray.pxd
@@ -5,13 +5,6 @@ Bit array functions
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/bitarray.pyx b/yt/utilities/lib/bitarray.pyx
index 7321ef016..2c4a0d883 100644
--- a/yt/utilities/lib/bitarray.pyx
+++ b/yt/utilities/lib/bitarray.pyx
@@ -5,13 +5,6 @@ Bit array functions
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/bounded_priority_queue.pxd b/yt/utilities/lib/bounded_priority_queue.pxd
index c86fd80b5..798cf7a07 100644
--- a/yt/utilities/lib/bounded_priority_queue.pxd
+++ b/yt/utilities/lib/bounded_priority_queue.pxd
@@ -7,13 +7,6 @@ been added to it.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2017, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 import numpy as np
 cimport numpy as np
 
diff --git a/yt/utilities/lib/bounded_priority_queue.pyx b/yt/utilities/lib/bounded_priority_queue.pyx
index 17ddceba1..a035a8d35 100644
--- a/yt/utilities/lib/bounded_priority_queue.pyx
+++ b/yt/utilities/lib/bounded_priority_queue.pyx
@@ -9,13 +9,6 @@ element at the beginning - this exploited to store nearest neighbour lists.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2017, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/contour_finding.pxd b/yt/utilities/lib/contour_finding.pxd
index c30d492b0..1b34fae2f 100644
--- a/yt/utilities/lib/contour_finding.pxd
+++ b/yt/utilities/lib/contour_finding.pxd
@@ -5,13 +5,6 @@ Contour finding exports
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 
 cimport numpy as np
diff --git a/yt/utilities/lib/contour_finding.pyx b/yt/utilities/lib/contour_finding.pyx
index e577dc702..9d4f2d1bc 100644
--- a/yt/utilities/lib/contour_finding.pyx
+++ b/yt/utilities/lib/contour_finding.pyx
@@ -5,13 +5,6 @@ A two-pass contour finding algorithm
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/cyoctree.pyx b/yt/utilities/lib/cyoctree.pyx
index 01ccb368a..b2bf5b14d 100644
--- a/yt/utilities/lib/cyoctree.pyx
+++ b/yt/utilities/lib/cyoctree.pyx
@@ -5,13 +5,6 @@ CyOctree building, loading and refining routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2018, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 import numpy as np
diff --git a/yt/utilities/lib/depth_first_octree.pyx b/yt/utilities/lib/depth_first_octree.pyx
index 6af3ed695..45280ae49 100644
--- a/yt/utilities/lib/depth_first_octree.pyx
+++ b/yt/utilities/lib/depth_first_octree.pyx
@@ -5,13 +5,6 @@ This is a recursive function to return a depth-first octree
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/distance_queue.pxd b/yt/utilities/lib/distance_queue.pxd
index 67ea4190f..3eb7b9afe 100644
--- a/yt/utilities/lib/distance_queue.pxd
+++ b/yt/utilities/lib/distance_queue.pxd
@@ -6,13 +6,6 @@ A queue for evaluating distances to discrete points
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport cython
 cimport numpy as np
diff --git a/yt/utilities/lib/distance_queue.pyx b/yt/utilities/lib/distance_queue.pyx
index d501a2ba0..15deb6312 100644
--- a/yt/utilities/lib/distance_queue.pyx
+++ b/yt/utilities/lib/distance_queue.pyx
@@ -6,13 +6,6 @@ Distance queue implementation
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 cimport numpy as np
 import numpy as np
 cimport cython
diff --git a/yt/utilities/lib/element_mappings.pyx b/yt/utilities/lib/element_mappings.pyx
index 8c01956fc..d88c83c2a 100644
--- a/yt/utilities/lib/element_mappings.pyx
+++ b/yt/utilities/lib/element_mappings.pyx
@@ -6,13 +6,6 @@ interpolation on finite element data.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 from numpy cimport ndarray
diff --git a/yt/utilities/lib/ewah_bool_array.pxd b/yt/utilities/lib/ewah_bool_array.pxd
index e1a2f75bb..59d8db033 100644
--- a/yt/utilities/lib/ewah_bool_array.pxd
+++ b/yt/utilities/lib/ewah_bool_array.pxd
@@ -5,13 +5,6 @@ Wrapper for EWAH Bool Array: https://github.com/lemire/EWAHBoolArray
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 cimport cython
diff --git a/yt/utilities/lib/ewah_bool_wrap.pyx b/yt/utilities/lib/ewah_bool_wrap.pyx
index b5fad154f..e7982c789 100644
--- a/yt/utilities/lib/ewah_bool_wrap.pyx
+++ b/yt/utilities/lib/ewah_bool_wrap.pyx
@@ -5,13 +5,6 @@ Wrapper for EWAH Bool Array: https://github.com/lemire/EWAHBoolArray
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import struct
 from libcpp.map cimport map as cmap
diff --git a/yt/utilities/lib/field_interpolation_tables.pxd b/yt/utilities/lib/field_interpolation_tables.pxd
index 19dbc2a7e..7ff9814b8 100644
--- a/yt/utilities/lib/field_interpolation_tables.pxd
+++ b/yt/utilities/lib/field_interpolation_tables.pxd
@@ -5,13 +5,6 @@ Field Interpolation Tables
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport cython
 cimport numpy as np
diff --git a/yt/utilities/lib/fixed_interpolator.c b/yt/utilities/lib/fixed_interpolator.c
index d9c535923..93fb21d03 100644
--- a/yt/utilities/lib/fixed_interpolator.c
+++ b/yt/utilities/lib/fixed_interpolator.c
@@ -1,9 +1,4 @@
 /*******************************************************************************
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
 *******************************************************************************/
 
 //
diff --git a/yt/utilities/lib/fixed_interpolator.h b/yt/utilities/lib/fixed_interpolator.h
index 60e381601..31363ae2e 100644
--- a/yt/utilities/lib/fixed_interpolator.h
+++ b/yt/utilities/lib/fixed_interpolator.h
@@ -1,9 +1,4 @@
 /*******************************************************************************
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
 *******************************************************************************/
 //
 // A small, tiny, itty bitty module for computation-intensive interpolation
diff --git a/yt/utilities/lib/fixed_interpolator.pxd b/yt/utilities/lib/fixed_interpolator.pxd
index 5baa09bfd..f95036731 100644
--- a/yt/utilities/lib/fixed_interpolator.pxd
+++ b/yt/utilities/lib/fixed_interpolator.pxd
@@ -5,13 +5,6 @@ Fixed interpolator includes
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 
diff --git a/yt/utilities/lib/fnv_hash.pxd b/yt/utilities/lib/fnv_hash.pxd
index be9686dd1..7700981fa 100644
--- a/yt/utilities/lib/fnv_hash.pxd
+++ b/yt/utilities/lib/fnv_hash.pxd
@@ -6,13 +6,6 @@ Definitions for fnv_hash
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2017, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 
 import numpy as np
diff --git a/yt/utilities/lib/fnv_hash.pyx b/yt/utilities/lib/fnv_hash.pyx
index 044ab91aa..d3ba7b0fc 100644
--- a/yt/utilities/lib/fnv_hash.pyx
+++ b/yt/utilities/lib/fnv_hash.pyx
@@ -4,13 +4,6 @@ Fast hashing routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2017, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/fortran_reader.pyx b/yt/utilities/lib/fortran_reader.pyx
index b761e5818..af5d11351 100644
--- a/yt/utilities/lib/fortran_reader.pyx
+++ b/yt/utilities/lib/fortran_reader.pyx
@@ -5,13 +5,6 @@ Simple readers for fortran unformatted data, specifically for the Tiger code.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/fp_utils.pxd b/yt/utilities/lib/fp_utils.pxd
index b99509394..add1ba034 100644
--- a/yt/utilities/lib/fp_utils.pxd
+++ b/yt/utilities/lib/fp_utils.pxd
@@ -5,13 +5,6 @@ Shareable definitions for common fp/int Cython utilities
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 cimport cython
diff --git a/yt/utilities/lib/geometry_utils.pxd b/yt/utilities/lib/geometry_utils.pxd
index 165c74313..844faaa5b 100644
--- a/yt/utilities/lib/geometry_utils.pxd
+++ b/yt/utilities/lib/geometry_utils.pxd
@@ -6,13 +6,6 @@ Particle Deposition onto Octs
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 cimport numpy as np
 cimport cython
 from libc.float cimport DBL_MANT_DIG
diff --git a/yt/utilities/lib/geometry_utils.pyx b/yt/utilities/lib/geometry_utils.pyx
index 564417356..e3a7cff9e 100644
--- a/yt/utilities/lib/geometry_utils.pyx
+++ b/yt/utilities/lib/geometry_utils.pyx
@@ -5,13 +5,6 @@ Simple integrators for the radiative transfer equation
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/grid_traversal.pxd b/yt/utilities/lib/grid_traversal.pxd
index f34be6cad..0639fd37f 100644
--- a/yt/utilities/lib/grid_traversal.pxd
+++ b/yt/utilities/lib/grid_traversal.pxd
@@ -6,13 +6,6 @@ Definitions for the traversal code
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/grid_traversal.pyx b/yt/utilities/lib/grid_traversal.pyx
index 1b651e6ef..6f0831b88 100644
--- a/yt/utilities/lib/grid_traversal.pyx
+++ b/yt/utilities/lib/grid_traversal.pyx
@@ -5,13 +5,6 @@ Simple integrators for the radiative transfer equation
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/healpix_interface.pxd b/yt/utilities/lib/healpix_interface.pxd
index edf6a0929..298da0bb1 100644
--- a/yt/utilities/lib/healpix_interface.pxd
+++ b/yt/utilities/lib/healpix_interface.pxd
@@ -5,13 +5,6 @@ A light interface to a few HEALPix routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/image_samplers.pxd b/yt/utilities/lib/image_samplers.pxd
index 9b1801c9a..fb404fc4e 100644
--- a/yt/utilities/lib/image_samplers.pxd
+++ b/yt/utilities/lib/image_samplers.pxd
@@ -6,13 +6,6 @@ Definitions for image samplers
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/image_samplers.pyx b/yt/utilities/lib/image_samplers.pyx
index 732165a6f..214e2cd1d 100644
--- a/yt/utilities/lib/image_samplers.pyx
+++ b/yt/utilities/lib/image_samplers.pyx
@@ -5,13 +5,6 @@ Image sampler definitions
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/image_utilities.pyx b/yt/utilities/lib/image_utilities.pyx
index f51cd44ad..a83e6ea94 100644
--- a/yt/utilities/lib/image_utilities.pyx
+++ b/yt/utilities/lib/image_utilities.pyx
@@ -2,13 +2,6 @@
 Utilities for images
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/interpolators.pyx b/yt/utilities/lib/interpolators.pyx
index 169d9eaa3..9bf6f2c64 100644
--- a/yt/utilities/lib/interpolators.pyx
+++ b/yt/utilities/lib/interpolators.pyx
@@ -5,13 +5,6 @@ Simple interpolators
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/lenses.pxd b/yt/utilities/lib/lenses.pxd
index 9b706c037..edca8640f 100644
--- a/yt/utilities/lib/lenses.pxd
+++ b/yt/utilities/lib/lenses.pxd
@@ -6,13 +6,6 @@ Definitions for the lens code
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/lenses.pyx b/yt/utilities/lib/lenses.pyx
index bc3c02987..0e36474f2 100644
--- a/yt/utilities/lib/lenses.pyx
+++ b/yt/utilities/lib/lenses.pyx
@@ -5,13 +5,6 @@ Functions for computing the extent of lenses and whatnot
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/line_integral_convolution.pyx b/yt/utilities/lib/line_integral_convolution.pyx
index 762c26919..09d68abb8 100644
--- a/yt/utilities/lib/line_integral_convolution.pyx
+++ b/yt/utilities/lib/line_integral_convolution.pyx
@@ -5,17 +5,6 @@ Utilities for line integral convolution annotation
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Code originally from Scipy Cookbook (http://wiki.scipy.org/Cookbook/LineIntegralConvolution),
-# with bug fixed which leads to crash when non equal-size vector field in two
-# dimensions is provided.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 
 import numpy as np
diff --git a/yt/utilities/lib/marching_cubes.pyx b/yt/utilities/lib/marching_cubes.pyx
index 42254185e..b1db9923a 100644
--- a/yt/utilities/lib/marching_cubes.pyx
+++ b/yt/utilities/lib/marching_cubes.pyx
@@ -5,13 +5,6 @@ Marching cubes implementation
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 cimport cython
diff --git a/yt/utilities/lib/mesh_construction.pyx b/yt/utilities/lib/mesh_construction.pyx
index b85b800ca..47db9f4f6 100644
--- a/yt/utilities/lib/mesh_construction.pyx
+++ b/yt/utilities/lib/mesh_construction.pyx
@@ -8,13 +8,6 @@ Note - this file is only used for the Embree-accelerated ray-tracer.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport cython
diff --git a/yt/utilities/lib/mesh_intersection.pyx b/yt/utilities/lib/mesh_intersection.pyx
index 8d220c1d9..28d501fcc 100644
--- a/yt/utilities/lib/mesh_intersection.pyx
+++ b/yt/utilities/lib/mesh_intersection.pyx
@@ -6,13 +6,6 @@ Note - this file is only used for the Embree-accelerated ray-tracer.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport pyembree.rtcore as rtc
 cimport pyembree.rtcore_ray as rtcr
diff --git a/yt/utilities/lib/mesh_samplers.pyx b/yt/utilities/lib/mesh_samplers.pyx
index 716b331ff..9381f7d34 100644
--- a/yt/utilities/lib/mesh_samplers.pyx
+++ b/yt/utilities/lib/mesh_samplers.pyx
@@ -6,13 +6,6 @@ Note - this file is only used for the Embree-accelerated ray-tracer.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport pyembree.rtcore as rtc
 cimport pyembree.rtcore_ray as rtcr
diff --git a/yt/utilities/lib/mesh_traversal.pyx b/yt/utilities/lib/mesh_traversal.pyx
index 86a80dc6d..d5cddc413 100644
--- a/yt/utilities/lib/mesh_traversal.pyx
+++ b/yt/utilities/lib/mesh_traversal.pyx
@@ -5,13 +5,6 @@ mesh source using either pyembree or the cython ray caster.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport cython
 cimport numpy as np
diff --git a/yt/utilities/lib/mesh_utilities.pyx b/yt/utilities/lib/mesh_utilities.pyx
index 8d2a5c611..5a0bddfd0 100644
--- a/yt/utilities/lib/mesh_utilities.pyx
+++ b/yt/utilities/lib/mesh_utilities.pyx
@@ -5,13 +5,6 @@ Utilities for unstructured and semi-structured meshes
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/misc_utilities.pyx b/yt/utilities/lib/misc_utilities.pyx
index 07597d984..221141037 100644
--- a/yt/utilities/lib/misc_utilities.pyx
+++ b/yt/utilities/lib/misc_utilities.pyx
@@ -5,13 +5,6 @@ Simple utilities that don't fit anywhere else
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 from yt.funcs import get_pbar
 import numpy as np
diff --git a/yt/utilities/lib/origami.pyx b/yt/utilities/lib/origami.pyx
index f7a643c10..36c709d06 100644
--- a/yt/utilities/lib/origami.pyx
+++ b/yt/utilities/lib/origami.pyx
@@ -5,13 +5,6 @@ This calls the ORIGAMI routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/particle_kdtree_tools.pyx b/yt/utilities/lib/particle_kdtree_tools.pyx
index 37a2c0235..96a6fa6a9 100644
--- a/yt/utilities/lib/particle_kdtree_tools.pyx
+++ b/yt/utilities/lib/particle_kdtree_tools.pyx
@@ -5,13 +5,6 @@ Cython tools for working with the PyKDTree particle KDTree.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2017, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/particle_mesh_operations.pyx b/yt/utilities/lib/particle_mesh_operations.pyx
index cfae4e04d..81c3e6ff9 100644
--- a/yt/utilities/lib/particle_mesh_operations.pyx
+++ b/yt/utilities/lib/particle_mesh_operations.pyx
@@ -5,13 +5,6 @@ Simple integrators for the radiative transfer equation
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 cimport cython
diff --git a/yt/utilities/lib/partitioned_grid.pxd b/yt/utilities/lib/partitioned_grid.pxd
index dfa6c78a8..29affd91e 100644
--- a/yt/utilities/lib/partitioned_grid.pxd
+++ b/yt/utilities/lib/partitioned_grid.pxd
@@ -6,13 +6,6 @@ Definitions for the partitioned grid
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/partitioned_grid.pyx b/yt/utilities/lib/partitioned_grid.pyx
index 02dceffda..12502b108 100644
--- a/yt/utilities/lib/partitioned_grid.pyx
+++ b/yt/utilities/lib/partitioned_grid.pyx
@@ -5,13 +5,6 @@ Image sampler definitions
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/perftools_wrap.pyx b/yt/utilities/lib/perftools_wrap.pyx
index feaacf76f..8fad0df8c 100644
--- a/yt/utilities/lib/perftools_wrap.pyx
+++ b/yt/utilities/lib/perftools_wrap.pyx
@@ -5,13 +5,6 @@ Turn on and off perftools profiling
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 # For more info:
 # https://pygabriel.wordpress.com/2010/04/14/profiling-python-c-extensions/
diff --git a/yt/utilities/lib/pixelization_constants.c b/yt/utilities/lib/pixelization_constants.c
index b65e962f0..6b2ae57cb 100644
--- a/yt/utilities/lib/pixelization_constants.c
+++ b/yt/utilities/lib/pixelization_constants.c
@@ -1,9 +1,4 @@
 /*******************************************************************************
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
 *******************************************************************************/
 //
 // Some Cython versions don't like module-level constants, so we'll put them
diff --git a/yt/utilities/lib/pixelization_constants.h b/yt/utilities/lib/pixelization_constants.h
index b97c19ace..22d8af127 100644
--- a/yt/utilities/lib/pixelization_constants.h
+++ b/yt/utilities/lib/pixelization_constants.h
@@ -1,9 +1,4 @@
 /*******************************************************************************
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
 *******************************************************************************/
 //
 // Some Cython versions don't like module-level constants, so we'll put them
diff --git a/yt/utilities/lib/pixelization_routines.pyx b/yt/utilities/lib/pixelization_routines.pyx
index 72ae2e31f..aecd71f22 100644
--- a/yt/utilities/lib/pixelization_routines.pyx
+++ b/yt/utilities/lib/pixelization_routines.pyx
@@ -5,13 +5,6 @@ Pixelization routines
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/points_in_volume.pyx b/yt/utilities/lib/points_in_volume.pyx
index d9bf93816..a3073eab8 100644
--- a/yt/utilities/lib/points_in_volume.pyx
+++ b/yt/utilities/lib/points_in_volume.pyx
@@ -5,13 +5,6 @@ Checks for points contained in a volume
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 
 import numpy as np
diff --git a/yt/utilities/lib/quad_tree.pyx b/yt/utilities/lib/quad_tree.pyx
index dbf7b6965..07e993756 100644
--- a/yt/utilities/lib/quad_tree.pyx
+++ b/yt/utilities/lib/quad_tree.pyx
@@ -5,13 +5,6 @@ A refine-by-two AMR-specific quadtree
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 
 import numpy as np
diff --git a/yt/utilities/lib/ragged_arrays.pyx b/yt/utilities/lib/ragged_arrays.pyx
index 77779347e..17541d55a 100644
--- a/yt/utilities/lib/ragged_arrays.pyx
+++ b/yt/utilities/lib/ragged_arrays.pyx
@@ -5,13 +5,6 @@ Some simple operations for operating on ragged arrays
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2014, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/lib/volume_container.pxd b/yt/utilities/lib/volume_container.pxd
index d2aed50ce..5b432336b 100644
--- a/yt/utilities/lib/volume_container.pxd
+++ b/yt/utilities/lib/volume_container.pxd
@@ -6,13 +6,6 @@ A volume container
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2016, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 cimport numpy as np
 
diff --git a/yt/utilities/lib/write_array.pyx b/yt/utilities/lib/write_array.pyx
index 98fe42d1e..291bbbbbb 100644
--- a/yt/utilities/lib/write_array.pyx
+++ b/yt/utilities/lib/write_array.pyx
@@ -5,13 +5,6 @@ Faster, cythonized file IO
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 import numpy as np
 cimport numpy as np
diff --git a/yt/utilities/parallel_tools/__init__.py b/yt/utilities/parallel_tools/__init__.py
index 22fb07ed3..ad451d69e 100644
--- a/yt/utilities/parallel_tools/__init__.py
+++ b/yt/utilities/parallel_tools/__init__.py
@@ -5,10 +5,3 @@ Tools for parallelism.
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/utilities/voropp.pyx b/yt/utilities/voropp.pyx
index 86e6b4902..13625774a 100644
--- a/yt/utilities/voropp.pyx
+++ b/yt/utilities/voropp.pyx
@@ -5,13 +5,6 @@ Wrapping code for voro++
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
 
 from cython.operator cimport dereference as deref, preincrement as inc
 from libc.stdlib cimport malloc, free, abs, calloc, labs
diff --git a/yt/visualization/__init__.py b/yt/visualization/__init__.py
index ccbbe1519..938c0f5ff 100644
--- a/yt/visualization/__init__.py
+++ b/yt/visualization/__init__.py
@@ -10,10 +10,3 @@ Who knows?
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/visualization/tests/test_filters.py b/yt/visualization/tests/test_filters.py
index d3ccde66c..8ee04734e 100644
--- a/yt/visualization/tests/test_filters.py
+++ b/yt/visualization/tests/test_filters.py
@@ -1,9 +1,3 @@
-#-----------------------------------------------------------------------------
-# Copyright (c) 2015, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-#-----------------------------------------------------------------------------
 
 """
 Tests for frb filters
diff --git a/yt/visualization/volume_rendering/__init__.py b/yt/visualization/volume_rendering/__init__.py
index b5bd4a232..ee2b9899d 100644
--- a/yt/visualization/volume_rendering/__init__.py
+++ b/yt/visualization/volume_rendering/__init__.py
@@ -5,10 +5,3 @@ API for yt.visualization.volume_rendering
 
 """
 
-#-----------------------------------------------------------------------------
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-#-----------------------------------------------------------------------------
diff --git a/yt/visualization/volume_rendering/_cuda_caster.cu b/yt/visualization/volume_rendering/_cuda_caster.cu
index c8dbdad1b..e5c60e4f0 100644
--- a/yt/visualization/volume_rendering/_cuda_caster.cu
+++ b/yt/visualization/volume_rendering/_cuda_caster.cu
@@ -1,11 +1,3 @@
-/*******************************************************************************
-# Copyright (c) 2013, yt Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
-*******************************************************************************/
-
 // An attempt at putting the ray-casting operation into CUDA
 //extern __shared__ float array[];
 
['yt/utilities/lib/mesh_traversal.pyx', 'yt/utilities/lib/points_in_volume.pyx', 'yt/utilities/lib/element_mappings.pyx', 'yt/frontends/gamer/__init__.py', 'yt/utilities/lib/contour_finding.pyx', 'yt/geometry/particle_smooth.pxd', 'yt/api.py', 'yt/utilities/lib/allocation_container.pyx', 'yt/utilities/lib/geometry_utils.pyx', 'yt/utilities/lib/bounded_priority_queue.pxd', 'yt/utilities/lib/grid_traversal.pyx', 'yt/utilities/lib/ragged_arrays.pyx', 'yt/utilities/lib/mesh_construction.pyx', 'yt/utilities/lib/fnv_hash.pxd', 'yt/utilities/voropp.pyx', 'yt/utilities/lib/partitioned_grid.pyx', 'yt/utilities/lib/perftools_wrap.pyx', 'yt/utilities/lib/line_integral_convolution.pyx', 'yt/geometry/grid_container.pyx', 'yt/utilities/lib/fixed_interpolator.c', 'yt/geometry/oct_container.pyx', 'yt/utilities/lib/depth_first_octree.pyx', 'yt/frontends/sph/api.py', 'yt/utilities/lib/grid_traversal.pxd', 'yt/frontends/ahf/__init__.py', 'yt/geometry/particle_oct_container.pyx', 'yt/utilities/lib/cyoctree.pyx', 'yt/frontends/athena_pp/definitions.py', 'yt/frontends/_skeleton/__init__.py', 'yt/utilities/lib/field_interpolation_tables.pxd', 'yt/frontends/ytdata/__init__.py', 'yt/utilities/lib/pixelization_constants.h', 'yt/geometry/selection_routines.pyx', 'yt/utilities/lib/interpolators.pyx', 'yt/frontends/sph/__init__.py', 'yt/frontends/art/__init__.py', 'yt/frontends/sdf/__init__.py', 'yt/utilities/api.py', 'yt/utilities/lib/distance_queue.pyx', 'yt/visualization/tests/test_filters.py', 'yt/geometry/particle_deposit.pyx', 'yt/utilities/lib/alt_ray_tracers.pyx', 'yt/frontends/gdf/definitions.py', 'yt/utilities/lib/amr_kdtools.pxd', 'yt/utilities/lib/bitarray.pxd', 'yt/frontends/athena/definitions.py', 'yt/geometry/oct_visitors.pxd', 'yt/utilities/lib/image_utilities.pyx', 'yt/utilities/lib/healpix_interface.pxd', 'yt/utilities/lib/fnv_hash.pyx', 'yt/frontends/halo_catalog/__init__.py', 'yt/utilities/lib/image_samplers.pyx', 'yt/utilities/lib/geometry_utils.pxd', 'yt/utilities/lib/bitarray.pyx', 'yt/utilities/parallel_tools/__init__.py', 'yt/utilities/lib/lenses.pyx', 'yt/geometry/particle_smooth.pyx', 'yt/geometry/grid_visitors.pxd', 'yt/utilities/lib/write_array.pyx', 'yt/utilities/lib/ewah_bool_wrap.pyx', 'yt/utilities/lib/fp_utils.pxd', 'yt/utilities/lib/particle_kdtree_tools.pyx', 'yt/utilities/lib/particle_mesh_operations.pyx', 'yt/utilities/lib/bounded_priority_queue.pyx', 'yt/utilities/lib/fixed_interpolator.pxd', 'yt/utilities/lib/allocation_container.pxd', 'yt/utilities/lib/fixed_interpolator.h', 'yt/geometry/fake_octree.pyx', 'yt/frontends/artio/__init__.py', 'tests/report_failed_answers.py', 'yt/utilities/lib/pixelization_routines.pyx', 'yt/geometry/grid_visitors.pyx', 'yt/geometry/oct_container.pxd', 'yt/utilities/lib/contour_finding.pxd', 'yt/utilities/lib/fortran_reader.pyx', 'yt/geometry/selection_routines.pxd', 'yt/utilities/lib/marching_cubes.pyx', 'yt/utilities/lib/basic_octree.pyx', 'yt/frontends/flash/__init__.py', 'yt/utilities/lib/mesh_samplers.pyx', 'yt/utilities/lib/mesh_intersection.pyx', 'yt/utilities/lib/pixelization_constants.c', 'yt/visualization/volume_rendering/_cuda_caster.cu', 'yt/utilities/lib/misc_utilities.pyx', 'yt/frontends/rockstar/__init__.py', 'yt/utilities/lib/amr_kdtools.pyx', 'yt/frontends/boxlib/__init__.py', 'yt/utilities/lib/image_samplers.pxd', 'yt/frontends/owls_subfind/__init__.py', 'yt/utilities/lib/mesh_utilities.pyx', 'yt/utilities/answer_testing/__init__.py', 'yt/geometry/grid_container.pxd', 'yt/utilities/lib/quad_tree.pyx', 'yt/geometry/particle_deposit.pxd', 'yt/frontends/moab/__init__.py', 'yt/utilities/amr_kdtree/__init__.py', 'yt/utilities/lib/ewah_bool_array.pxd', 'yt/utilities/lib/volume_container.pxd', 'yt/utilities/lib/lenses.pxd', 'yt/frontends/gadget_fof/__init__.py', 'yt/frontends/ramses/__init__.py', 'yt/visualization/__init__.py', 'yt/utilities/lib/partitioned_grid.pxd', 'yt/frontends/open_pmd/__init__.py', 'yt/geometry/oct_visitors.pyx', 'yt/utilities/lib/distance_queue.pxd', 'yt/utilities/lib/origami.pyx', 'yt/frontends/exodus_ii/__init__.py', 'yt/visualization/volume_rendering/__init__.py']