added ROIs.type and .shift to ensure compatibility
minor bug fix for loading stack when origin is not registered yet
fixed memory bug
added fct to compute MI
Reduced number of maxrounds for ICA to decrease auto_segmentation run time.
Added support for autosegmentation of ROIs based on Mukamel 2009. AVP
bugfix: data type conversion
minor: some code optimisation (loading time and junk removal)
bugfix - after pressing "c" single frame would be shown instead of average