Lots of fix-ups:
- Smoother fonts
- KeyBind capitalizes key names
- use_click, use_hover, use_scroll, use_active, use_focus, are now called automatically when needed, so they'll be behind-the-scenes from now on.
- Added onKeyup event that was missing
- Added a "keyboard" event that fires every frame when key(s) are pressed
- All event callbacks take the same parameters, in the same order, now
- Added "inner" events that handle built-in events for elements, i.e. an active button changing color, or text being added to the textbox when a key is pressed.
- onKeydown events for Textbox and KeyBind are now fixed
- New trigger() function for dynamically triggering events