Only load one file to check channel names
Only load one file to check channel names

Previously, all the data was loaded before checking channels, which
often took a lot of time and then failing the channels check would
require completely reloading all the data.

Also added an option to force compensation recalculation

jonesr18/MATLAB_Flow_Analysis,jonesr18/MATLAB_Flow_Analysis,jonesr18/MATLAB_Flow_Analysis,jonesr18/MATLAB_Flow_Analysis