Fix/migrate to null safety
Migrate elRepo.io-android to null safety
- Upgrade dart sdk to
">=2.12.0 <3.0.0" - Use the new
retroshare-dart-wrappercode to https://gitlab.com/andrearuizrull/retroshare-wrapper-dart/feature/refactor_api_client - Use the new
elRepo-libcode to https://gitlab.com/andrearuizrull/elrepo-lib/-/tree/feature/wrapper_refactor_compatibility - Migrate all the code to null safety
- Upgrade not compatible or deprecated plugins
After all the changes I tested manually the app for bugfixing