New core library - love_binds
Fix UI clipping; add ui.start/end_scissor
Fix odd-width rectangle border issue
Handle tabs when printing
Add a checkbox toggle event
Add button.event_mouseup
Clean up debug monitor and add text contrast
Return the event pass (unsafe) from event calls
Define new events!

Defined display_update and display_updated
Clean up header
Fix event priority and screen sizing
Rename display_update to display_updated for clarity