Adds cw to be passed through as C-c C-w
Adds toggle and launch bindings. Ideas found here:

https://github.com/mwfogleman/config
http://endlessparentheses.com/launcher-keymap-for-standalone-features.html
http://endlessparentheses.com/the-toggle-map-and-wizardry.html
Kill buffer without mercy.
Adds toggle-debug-on-error to toggle map.