Merge tag '0.3.2' into develop

Version 0.3.2
Merge tag '0.3.3' into develop

Version 0.3.3
Merge branch 'master' into develop
feat: segmentation metrics (purity and coverage)

@guinaudeau could be used for evaluation of segmentation into scenes
feat: segmentation error analysis
doc: LICENSE
doc: CHANGELOG v0.4
Merge branch 'release/0.4'