1.0.0-alpha.3

This release fixes bugs spotted during users tests and does not add new features. Still alpha/pre-release.

Fixed

• fix bug when accessing a composition containing a citation to an excerpt that has been deleted from corpus
• fix broken composition standalone player

Changed

• in composition view, display warning when trying to cite a excerpt twice
• diverse UI/UX fixes in composition view

Added

• in about section, new references to similar/alternative tools
• add manual e2e test checklist