[feature request] notify when disable

[945fc41467]

The expected behaviour is slightly different from caps lock and verr num : we usually want to know when caps lock IS activated and when verr num ISN’T activated. So what I suggest : sepparate option for both feature :

• caps lock : always show - never show - hide/unhide - reverse hide/unhide
• verr-num : always show - never show - hide/unhide - reverse hide/unhide

Always show : display the icon in semitransparent when disabled and white when enabled
never show : never show the icon
hide/unhide : show the item when activated and hide it when disabled
reverse hide/unhide : show a slashed icon when disabled and hide it when activated

The menu would be a clearer as a side effect.

Thanks for your work anyway.