Mopidy-soundcloud

- Properly escape unsafe chars in URIs.

- Deprecated `explore` and `explore_pages` config values.

- Extension is now using Mopidy's virtual filesystem to expose music from your
SoundCloud account instead of fake playlists. See the "Browse" or "Files"
option in your MPD client.

In the virtual file system you can browse:

- The "Stream" with tracks from the users you follow.

- All "Explore" sections.

- Your followers and their shared tracks.

- Your liked tracks.

- Your sets.

- Add search support.

- Add support for looking up music by SoundCloud URLs through searching for the
URL as a file name.

- Updated extension and backend APIs to match Mopidy 0.18.

- Use proper logger namespaced to `mopidy_soundcloud` instead of ``mopidy``.

- Fix wrong use of `raise` when the SoundCloud API doesn't respond as expected

- Don't cache the user request.

- Require Requests >= 2.0. (Fixes 3)

- Require Mopidy >= 0.14.

- Fix crash when SoundCloud returns 404 on track lookup. (Fixes 7)

- Add some tests