mouse-events

Problem while calibrating. Need to zoom in to the pupil and then track the eye.

Current implementation only allows to specify one KeySet when calling some function in the Keyboard.

But that's not really idiomatic, in sense that we may want to do something like (Key.LeftCtrl or Key.RightCtrl) + K combination, in this case we can add two different handler for that (or create a lambda in a variable and call the function twice), but in some parts like suspensive waiting for

There's an unnecessary inline style on the stickLayer object. You can simply change the stick-to-me.css stick_popup to include display:none;.