A small Bug in setup.py
In `install_requires` of `setup.py` the library `colour` is mentioned twice. This needed to be changed.
diff --git a/setup.py b/setup.py
index 51b82798..4552d4c3 100755
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,6 @@ setup(
         ]
     },
     install_requires=[
-        "colour",
         "argparse",
         "colour",
         "numpy",
['setup.py']