This is a hotfix update, cherry picking some important fixes from the last 2.4.0-beta.2 nightly release.
Cherry picks:
- Save files in different thread (#883)
- Fix delete key not working in markdown mode
- Fix export to multipage PDF leads to empty pages except the current one (#878)
- Fix undo/redo not working correctly and freezing the app
- Big translation updates
Read more here: https://linwood.dev/butterfly/2.3.4