Fix bug in diff parser output

[nvie]

The diff --patch output parser was missing some edge case where Git would encode non-ASCII chars in path names as octals, but these weren't decoded properly.

\360\237\222\251.txt 

Decoded via utf-8, that will return:

💩.txt 

[nvie]

@Byron This is a bug we've seen in production for some time now. Happy for me to release 2.0.4 with this fix right now?

[Byron]

No objections, please feel free to make a release.
Something I usually do as well is to keep the milestones in sync, and thus create a new one with the upcoming release, and move all open issues from the just-released milestones into it. The latter can then be closed officially, which will then become another way for the inclined audience to see which issues/PRs made it in there.
Don't feel obliged, as I can do it when I see a disparity, but recently I noticed that I probably have made some mistakes while doing so after the fact.

In any case, thanks for your contribution :) !

[nvie]

Sure, will do!

[nvie]

2.0.4 is now up on PyPI :)