I created 3 PRs with fixes to existing bugs i found during development. They are in my local fork, will re-target or smth if we want to accept those PRs.
Autosave cannot be disabled https://github.com/LiquidCake/geany/pull/4
Configured file type is not set to GeanyDocument https://github.com/LiquidCake/geany/pull/3
File templates are not supported https://github.com/LiquidCake/geany/pull/2