Version 1.4.1

Changes / Fixes

#2793 StringToVisibilityConverter should handle null like an empty string
#2796 HamburgerMenu SelectedIndex Fix
#2797 Fix NumericUpDown using UseFloatingWatermark
#2789 Prevent the MetroDataGridCheckBox from being toggled by a TAB + SPACE when the cell is supposed to be read only.

#2795 NumericUpDown Watermark is shown twice when using floatingwatermark for textboxes
#2788 MetroDataGridCheckBox cell can be changed when IsReadOnly via keyboard + space
#2785 Vailidation tooltips does not show.
#2780 External Dialogs not visible with MainWindow set to IgnoreTaskbarOnMaximize