Null safety added

[sadreactonly]

No description provided.

[fredmo]

Hello,
I need this feature but as it is not merged, what could I do?
Is there a way to use your branch directly in the flutter?
Regards,

edit1 :
I replaced in pubspec.yaml :

  # opencv: ^1.0.4
  opencv:
    git:
      url: https://github.com/sadreactonly/flutter_opencv.git
      ref: master

=> it seems to build.

edit2 :
By updating the example, your branch works well :
main.zip