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
added plotTriggeredAverage.m to plot average respoonse of "data" on "trig" times
fixed bug in ca.m that would crash if view_stack auto closes figures
minor
bugfix
bug fix for filename
fixed bug for input shorter than 1000 samples.