Keybindings for Windows, Linux

[rgbkrk]

In support of #120, #129, #131.

Let's get some keybindings for Windows and Linux boxes!

I probably made terrible choices of keybindings, so feel free to chime in @smashwilson, @erran, @Quojil, @rhoconlinux, @izuzak.

[rgbkrk]

Ok, I'm liking shift-enter when I explicitly want to run code frequently.

While only coding though, it's likely for me to still being hitting shift from a previous character (e.g. {) as I hit enter. Maybe others aren't as sloppy, but I'm guessing some will find this a major pain point.

[ghost]

That's what trying to understand weird config files is for. I found that I needed to remove part of the config to get the new keybindings to work.

[rgbkrk]

Alright, merging this as is. fingers crossed. I hope people are happy with these default bindings.

[rgbkrk]

On second thought, I'm not going to leave the shift-enter keypress in. I'm really worried someone is going to accidentally run this at some weird state in their code, destroying all life as we know it.

[erran]

@rgbkrk I did end up running w/ shift-enter a couple of times by mistake. Guess I'm also slow to release shift when hitting non-alphanum keys.