BTW, the arrow keys, etc should have worked for rotations, etc. It’s handled by the navigator tool as the default tool. Except there was a bug, which will be shortly fixed.
The default is to rotate 5° with arrow keys, H-J-K-L, but the code is pretty easy to tweak in Navigator::keyPressEvent()
You can also translate the camera with the control modifier, or use the shift modifier to change the rotation axis.