fix: is_unknown should support Unknown instances
fix: temporary fix for REPERE 'spoken' annotations in TRSParser
fix(SlidingWindow): rangeToSegment(0, n) now works as expected
feat(Gaussian): Gaussian divergence
fix(parser): force UTF8 encoding in SRTParser
fix(feature): SlidingWindowFeature.crop() no longer try to guess out of extent feature vectors
chore(parser): BasePeriodicFeatureParser now relies on SlidingWindowFeature
chore(gitignore): inspired from https://github.com/github/gitignore