Option to disable key functions; plus ignore them when editable element is focused

[pintassilgo]

Hi. Three suggestions related to key functions:

1. Option to disable individual key functions.
2. Remove some useless key functions, as they are default in any video (HTML5): spacebar to play/pause, home/end to start/end, arrow keys...
3. Ignore key functions entirely if focused element (event.target) is editable (tagName == 'INPUT' || tagName == 'TEXTAREA' || tagName.isContentEditable || tagName == 'SELECT').

In case you don't understand how 3 could be valid if video is maximized: I use a sticky note addon for many reasons, one of them is to track where I stopped in long videos, so that I know where to start when I get back. Obviously, the content of this type of note consist of just numbers, but if I press, let's say, '5', instead of the number being typed in the note I end up with the video skipping to the middle of the duration.

Thanks.