Blender Focal/Lens Breathing

A simple Blender add-on that adds a driver and panel to control simulated focal/lens breathing on a selected camera.

PARAMETERS:
- dead_zone: the amount of time/space it takes for the breathing to begin
- focal_length: the camera's focal length
- slope: easing of breathing animation (*Does not need much adjustment, if at all)
- strength: how apparent the effect is