first attempt at implementing support for keys with modifiers
to use it, the keybinding have to be of the form mod:<modkey>:..:<modkey> <function> <keycode>
for instance in an ini file change findhh=h to findhh=mod:lshift h
[{000214A0-0000-0000-C000-000000000046}]
Prop3=19,2
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