_updateCheckboxesOnViewportChange renamed _updateCheckboxesFromColumnVisibility and employed after _initCellsByHeader to make sure checkbox states after init match column visibility when using a small-viewport device.
_updateCheckboxesOnViewportChange renamed _updateCheckboxesFromColumnVisibility and employed after _initCellsByHeader to make sure checkbox states after init match column visibility when using a small-viewport device.

adammessinger/Flexitable