Add command to attach to tmux when possible.

Signed-off-by: João Sampaio <jpmelos@gmail.com>
Add toggle for word wrapping.

Sometimes you do not want to wrap words, when editing HTML with long
lines, for example. You would allow those long lines to avoid them
showing up in code review when you just change their indentation (and
their content would also change, somestimes, to accomodate).

Signed-off-by: João Sampaio <jpmelos@gmail.com>