Keyboard events created with DOM don't trigger

There is a [known bug with Webkit](https://bugs.webkit.org/show_bug.cgi?id=16735) where KeyboardEvents created by the DOM have keyCode and charCode of 0, thus preventing us from manually triggering 'change' or 'input' events with this library.

I have managed to create a workaround by triggering a 'blur' Event on the input, but ultimately triggering the KeyboardEvent with a Tab or Comma would have been a better way of interacting.

Native JavaScript, particularly JS packages, is not my forte but I'm sure a simple solution to this issue would be to modify the event listeners to work off Keys rather than KeyCodes.