Test hiddenColsTest

Test	Status	Start time	Time (seconds)	Message
hiddenColsTest	1PASS	31 Oct 15:15:06	0.0

Target Class	Coverage contributed by hiddenColsTest
jalview.datamodel.RangeIterator   jalview.datamodel.RangeIterator	0.756756875.7%
jalview.datamodel.HiddenColumns   jalview.datamodel.HiddenColumns	0.0235849062.4%
jalview.io.JSONFile   jalview.io.JSONFile	0.00431965430.4%