Tweaked the update script to drop the user variables from vimrc into
vimrc.user when it's created. a new user-based config file can be used
to specify the location of the project folder without altering vimrc, if
it's a symlink and bound to bump into conflicts as changes are made. The
README was updated to reflect a few of the recent changes. The tagbar
now outputs to the lightline statusline if there's anything to report.
A new variable was added to choose whether to always start with the
tagbar enabled if the format is compatible, or use the older behaviour,
where it would only appear when triggered. The default is to enable it 24/7.