Merge tag '0.4' into develop

Version 0.4
setup: increment pyannote.metrics requirement
Merge tag '0.4.1' into develop

Version 0.4.1
git: ignore dist/ and MANIFEST
refactor: remove Camomile JSON (breaking change)
setup: requires pyannote.core 0.2
docs: CHANGELOG
Merge branch 'release/0.5'