Python 3.4 standard library modules

[sampsyo]

Python 3.4 is out! Even though beets is not on py3k yet, there are a few implications for us. This is a meta-bug to discuss the new standard library modules in 3.4 and how beets could benefit.

• There's a new enum module with a backport. We should take a dependency on this instead of using my aging hand-rolled implementation.
• There's a new asyncio library that is very similar in purpose to Bluelet but better-maintained. There is a backport called trollius.
• More ambitiously, pathlib could help us get rid of a lot of hand-rolled code for handling cross-platform paths and filenames. We could more the whole codebase to use path objects in place of bytestrings.

Contributions are welcome in any category!

[geigerzaehler]

Unfortunately pathlib does not work on 2.6.

[sampsyo]

Tragic. Well, that's another reason to drop 2.6 compatibility sooner rather than later.

[brunal]

The pathlib backport now works on python 2.6 (since version 1.0.1). See the changelog

[arcresu]

The enum part was handled in #642, pathlib is covered by #1409, and I've now split the bluelet part into #3246. I think that takes care of everything here so I'll close this and let the discussion continue in those focused issues :)