Key Binding Patch

This is a simple mod that patches the vanilla key binding and provides several enhancements:

• Key bindings that bind to the same key will be triggered all together.
• Support to use combination keys other than Ctrl, Shift and Alt (for example Z+D).
• Support to set multiple combination keys for a single key binding (for example Alt+V+D).
• Support to create shadow copies for key bindings (multiple key bindings for a functionality).
• Support to regis press/release callbacks for key bindings (for other mod developers).