Feature Sugestion: Keyboard navigation

[josealgardataborges]

@dmarman LOVE what you have done here!!!

Congratulations, it's amazingly beautiful project and implementation, I'm learning and enjoying in the process.

I only wanted to suggest you a new feature, which I think would help a lot... keyboard navigation!

Using the keyboard to interact with the algorithm, like so:

Play: SPACE (start/stop)

Advance 1: right arrow
Go Back 1: Left arrow

 Next 10: Up arrow
 Previous 10: Down arrow

Anyway, thanks for doing this and sharing it with the world! AMAZING!