Fix #12: bookmarks is optional
Prepare v0.3.1
Fix #11: add debug timers for client requests
Refactor Query, improve unit tests
Improve naming of assert methods
Resolve #10: new config option 'excludes'
Merge branch 'dev/v0.4.0' of https://github.com/tkem/mopidy-internetarchive into dev/v0.4.0