Merge tag '0.7' into develop

Version 0.7
style: PEP8
chore: rename "_raw" resources to "_www"
feat: add "transcript" and "transcript_aligned" for season 1
fix: add missing pyannote.parser dependency
chore: increase TVD requirement
fix: add transcript to 'package_data'
doc: update IPython Notebook
doc: add CHANGELOG for v0.8
Merge branch 'release/0.8'