2.0

• Keypress now has a listener class that must be instantiated. The functions that were previously in the global window.keypress object are now public methods of the window.keypress.Listener class.
• Each instance of a Keypress listener can be bound to a DOM element by passing in the element to the listener's constructor.
• Combos now default to being ordered (the property is now called is_unordered and is false by default).
• Combos' handlers preventDefault unless the handler returns true.
• The "combo" public method is now called "simple_combo".
• The basic combo helpers for simple, counting and sequence combos no longer have a third prevent_default optional parameter.
• Debugging console logs can be enabled by setting keypress.debug to true.
• All key event callbacks send a third argument specifying whether the event is firing again automatically because the key has remained pressed down.