tmux: define the auto-spawned window with name "local"

Signed-off-by: Ben Walton <bdwalton@gmail.com>
tmux: define prefix-e to select the emacs window

Signed-off-by: Ben Walton <bdwalton@gmail.com>
zsh: tweak history options

Signed-off-by: Ben Walton <bdwalton@gmail.com>
zsh: remove / from WORDCHARS to get closer to default readline

Signed-off-by: Ben Walton <bdwalton@gmail.com>