fix mode separator colors for ubaryd and laederon
add the most common problems into the documentation (#112).
add whitespace toggle command
add support for select mode. resolves #123.
add powerline separator for warning section
customizable empty branch message. closes #121.
temp disable
fix newb mistake. resolves #125.
extract a line number for mixed indents
reload separator color when colorscheme changes
fix whitespace indent setting changed incorrectly when toggling
fix warning separator colors out of sync between modes
extract matching background colors for file indicator
fixes error when colorscheme declared in gvimrc. resolves #126.
allow extensions to reload when color scheme changes. resolves #128
add ability to override left/right sides independently
Merge branch '127'

Resolves #127.

Conflicts:
	autoload/airline.vim
enable tagbar only for active windows
use hack fix for now. resolves #105.
extract iminsert out of core into an extension