Avoid accidentally typing in chat
NOTE: The current version does not work.
Does not work with Greasemonkey as it neither supports GM_registerMenuCommand nor GM_unregisterMenuCommand.
Use Tampermonkey or Violentmonkey instead.
There are three available modes (cycle through them via the menu button -- see image):
By default, the mode is preserved across page/browser reloads. To prevent this, set persist to false.
