Trigger modifier only shortcuts on first key release
It is needed to ensure that one can cycle between keyboard layouts simply by repeatedly pressing and releasing one of the two modifiers, e.g. "Shift" key in "Alt+Shift" shortcut.
It is needed to ensure that one can cycle between keyboard layouts simply by repeatedly pressing and releasing one of the two modifiers, e.g. "Shift" key in "Alt+Shift" shortcut.