I have recently installed your extension, but since then I could not use Ctrl+Shift+Alt+u shortcut to enter Unicode letters in Sublime Text. That shortcut (alongside with Ctrl+Shift+u, which does not work in ST, at least in ST3+) is used to enter Unicode characters on Linux.
Now I am able to disable a shortcut using (for example) a noop command, but I am not able to restore the original behaviour (i.e. prior to asigning your command to that shortcut) without editing Default.sublime-keymap (L68-78) in your repo.
Could your fix this issues please? 😉