beetsplug/fromfilename.py python3 compatability
https://github.com/beetbox/beets/blob/e8afcbe7ec4bc37bb080f6f466b98807d020753b/beetsplug/fromfilename.py#L104

python2

``` python2
d.values()
```

for python 3 this should be

``` python3
list(d.values())
```

diff --git a/beetsplug/fromfilename.py b/beetsplug/fromfilename.py
index 648df6258..5e1b822c2 100644
--- a/beetsplug/fromfilename.py
+++ b/beetsplug/fromfilename.py
@@ -101,7 +101,7 @@ def apply_matches(d):
     """Given a mapping from items to field dicts, apply the fields to
     the objects.
     """
-    some_map = d.values()[0]
+    some_map = list(d.values())[0]
     keys = some_map.keys()
 
     # Only proceed if the "tag" field is equal across all filenames.
['beetsplug/fromfilename.py']