Merge branch 'dev'

Version bump and documentation

Some data fixes for orthographies using legacy accents, some cleanup …

…from marks update and validation

Changelog update

Cleanup and refactored version inclusion

Added 'pruneRetainDecomposed' to Languages constructor

Orthography key warning instead or error

Version bump with new scripts and speakers

Marked Marathi orthography script as Devanagari and added note about …

…Balbodh

Added rudimentary tests for parse_chars