v1.12.1

-- Update the demo_snirf.m (previously demo_snirf_subj.m) to reflect the current SnirfClass. We want to share the Snirf reader/writer with others.
-- Fix bug in MetaDataTagsClass where LoadHdf5() method would be stuck in an endless loop.
-- Add overloaded == operator for comparing SnirfClass objects and the classes under it (AuxClass, MeasListClass, etc)
-- Make clear in Nirs2Snirf.m that the ntimebases argument (previously tfactor) is a debug variable used only to troubleshoot and generate simulated multiple time bases for DataClass objects.