Test testOffsetByVisibleColumns

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

Target Class	Coverage contributed by testOffsetByVisibleColumns
jalview.datamodel.HiddenCursorPosition   jalview.datamodel.HiddenCursorPosition	1.0100%
jalview.datamodel.HiddenColumnsCursor   jalview.datamodel.HiddenColumnsCursor	0.9687596.9%
jalview.datamodel.HiddenColumns   jalview.datamodel.HiddenColumns	0.247641524.8%
jalview.datamodel.ColumnSelection.IntList   jalview.datamodel.ColumnSelection.IntList	0.084112158.4%
jalview.datamodel.ColumnSelection   jalview.datamodel.ColumnSelection	0.0123966941.2%