updated pnccdModuleSubtract() in detectorCorrection.cpp so it now uses cmThreshold (used to be called cmDelta) that determines how tall the peak in the intensity histogram has to be to be counted and cmAccuracy that sets how many standard deviations away from the mean of the insensitive pixels that is accepted. If cmAccuracy = 0, only the (rounded) mean of the insensitive pixels is used (cmAccuracy = -1 should strictly use the float mean of the insensitive pixels, since the standard deviation is larger than 1 ADU).
Merge branch 'testing' of github.com:antonbarty/cheetah into testing