- update to material design
- comply to new android requirements, full support for android 12
- remove google tasks sync
- change folder selection method for SD sync and JSON backups
- remove internet permission: the app is now 100% offline
Technical:
- raise min SDK and target SDK (23 and 32)
- update libraries, migrate to androidx
- update gradle, ensure the app can build
- fix all tests
- remove old files, general code cleanup
Use f-droid or the play store to get a signed release version.