* Fixed bug not calling ImageStatusCallback with int. and w/o ext. soft ops
* Improved debug info. if image size mismatch between control and hw layers
* Improve ImageStatus counters monitoring in test_frelon_control.py
* Merged Tiago Coutinho image_events patch:
  * Added change events on std. image cntr. attrs. using ImageStatusCallback
  * Added last_image DevEncoded DATA_ARRAY attribute, pushing change events
  * Added gc command to trigger garbage collection
* Added last_image_pushes_events attr, controlling DATA_ARRAY change events
* Fixed Andor3 problem with non-implemented GetBitDepth in simulator camera