Window navigation

[marcantonio]

Thanks for this!

Is it possible to navigate between windows directionally? By that I mean something like mod-up would select the window above, mod-left would select the one to the left, etc. This works naturally when windows are side by side with window_next and window_previous, but I'm not sure if cortile understands relative position.

[marcantonio]

I took a shot at this in #89. It's not fully complete, but seems to work well for me. Before I go further, I wanted to see if there's interest in this functionality being merged, and also to make sure the approach satisfactory. Let me know if you'd like anything renamed or otherwise changed. For my use case, I'd bind to mod-up/down/left/right.

Tested on Mint w/ Xfce.

TODO:

• Handle edge cases where you can move further than you ought to. (Ex: you're already in the top row but can go "up" to Firefox because it has a slightly weird position)
• Disable in fullscreen and maximized modes