v1.10.5

-- Improved version number generating and checking and comparing GroupClass version numbers.
-- Added methods to AcqDataClass.m to retrieve version number
-- Lowered Snirf version num to .5 in anticipation of changes to conform to spec - we want it to be 1.0 for beta release.
-- Gor rid of needless 'derived' argument in calls to Save method since the default is to only save derived.