Drop Key cabinet padlock

Fixes #2 - the mod didn't make sense for this type of lock and actually broke controls, so I'm dropping the injection for it.

Tiny bugfix

Fixes a bug where holding the UP button on padlocks would sometimes let the original event leak through, temporarily breaking the screen.

Back button and Map shortcut

Merge pull request #1 from graynk/map_wip

Support for Back button and Map shortcut

First release

Supports padlock, key cabinet padlock, letter lock and roman numerals padlock