The texts for more keys have been updated:
* morekeys_a should now include only letters relevant to the active language
* morekeys_misc_a should include misc letters (accents, etc) not specifically needed for typing in the language

The above still needs to be applied to most other languages. Only QWERTY has been updated with the new morekeys system. Other layouts still need to be updated.

The Python version uses json files, separate from the xml files. Comments haven't been migrated still.

I'm still not very happy with the way the keyboard texts are managed and that it requires running a separate tool to generate a .java file. It's at least better than manually editing an autogenerated file as before, and python3 is more widely available than the archaic Android build system