fix(SlidingWindow): bad end time for rangeToSegment in case i0=0
git: ignore wip directory
chore(tagging): remove use of deprecated API
feat: pyannote.dataset IO module (with initial tvd support)
fix: several bugs in Annotation

* a.uri = new_uri would not update internal timelines
* label_coverage() and siblings would fail in case label does not exist
feat: add .srt file support to TimelineParser
feat: new HMM-based segmentation algorithm