Arrow Keys Enhancements

[jake-b]

Two feature requests:

• I would like a "Key Types" filter for Arrow Keys.
• A way of visualizing "key held" a little better, when navigating with the arrows, it seems like key repeat is kind of doing the job, but it would be awesome if the visualizer had specific key-down and key-released states, perhaps with key-repeat in the middle.

Thanks for your consideration.