readme: Replace Crate.io with PyPI
packaging: Make wheels universal
setup: Require Mopidy >= 0.18
tests: Update DummyBackend imports
ext: Use new setup(registry) API
docs: Update changelog
Merge pull request #5 from mopidy/mopidy-0.18-updates

Mopidy 0.18 updates
Ensure all files are packaged on PyPI
Name loggers using __name__
Release v1.1.0
`OpenUri()` should work even if `CanPlay` is false

When mopdiy is started thr tracklist and playlist are empty, so `CanPlay` is
false. But we should be a able to start playing a URI. The same situation occurs
when all tracks from both lists are deleted.
`OpenUri()` does not do anything if `CanControl` is false
Merge pull request #6 from geigerzaehler/master

OpenUri() should work with empty tracklist
Update changelog
Release v1.1.1
Merge tag 'v1.1.1' into debian

Release v1.1.1
debian: New upstream release