GiellaLT unimorph support

Unimorph is a project for “universal” encoding of morphology and collection of full-form annotated inflection lists.

There are several scripts in giella-core/scripts/unimoprh to support conversions to and from unimorph data for GiellaLT languages:

• generate.bash can take unimorph data and generate giellalt version in same order; can be used to send updates to unimorph
• generate-from-lexicons.bash takes stems/*.lexc files and generates unimorph database from all lemmas it finds and can tag somehow
• yamltests.py takes unimorph database and generates a yaml test
• analyseval.py takes a unimorph database and FSA and measures compatibility
• convert.py converts from hfst-lookup to unimorph
• xeroxy.py converts unimorph to lookup
• excluded.tags is list of tags that FSA ignores when generating or analysing for unimorph, e.g. compounding and derivation