Switch tmux binding and add 0 timeout
Switch tmux binding and add 0 timeout

The 0 timeout is for neovim/vim, so that pressing esc doesn't lag.

The changed tmux key binding from `a` to `s` is to stay out of the way
of vim bindings for ctrl-a.

bronzehedwick/dotfiles,bronzehedwick/dotfiles,bronzehedwick/dotfiles,bronzehedwick/dotfiles