Add a simple default.nix
delete a bunch of stuff
properly propagate exit code
fix weird focus issues
readme: fixup install instructions
readme: hide misleading config

probably won't get to this anytime soon
let's keep it simple for now
bind name aliases

this supports SPC as a bind alias. You could also use ' ' but now SPC is
supported and rendered properly.
clean up example cfg
fix clang build errors
more example pictures