fix tmux option query to handle values with spaces
Merge pull request #6 from vuduchild/fix_flaw_in_tmux_options_query

Fix tmux show-options query to handle values with spaces
Function spacing.
Updated tmux option handling.

@vuduchild had a good idea about the way to handle the options, but his
solution didn't handle the pane-base-index (which is available at
show-window-options, not show-options). I abstracted it a little and was able
to clean up some things I wasn't happy about.
Version bump; changes.