Firstly, there is a need to be able to use the image editor in a crop-only mode so the user can only crop a selected photo and the app handle the immediate result - this is useful in a lot of cases where you want to just crop a photo to a specific aspect ratio e.g. a profile picture where the picture needs to be square.
Secondly, there is a need to be able to have only specific transformation and image adjustment operations available to the user e.g. you may want to allow the user to crop or rotate their photo but not perform any kind of image adjustments or only increase the saturation, for example.
Why
Firstly, there is a need to be able to use the image editor in a crop-only mode so the user can only crop a selected photo and the app handle the immediate result - this is useful in a lot of cases where you want to just crop a photo to a specific aspect ratio e.g. a profile picture where the picture needs to be square.
Secondly, there is a need to be able to have only specific transformation and image adjustment operations available to the user e.g. you may want to allow the user to crop or rotate their photo but not perform any kind of image adjustments or only increase the saturation, for example.
This should resolve #23.