Breaking:
* Rework and fix (grammatic) inflection parsing
* Replace the `.grammar` and `.grammar_raw` word properties with `.inflection`, `--grammar` with `--inflect`
New features:
* Add `pronunciation_audio_url` property 183 by mundanevision20
* Synonyms are now properly split 195
Bugfixes:
* Fix failing "words_before" and "words_after" properties 191