Enable long color codes in format strings

So instead of %1 - %8, there's now %[122] for example. Still needs
testing and configuration behind it.
Implement refresh

- Reset tags, discard all items fetched prior.
- Protection is handled by the config / taglist so no need to worry
  about it here.
- Better sync timing will make this seem faster.
Color config improvements

- Sub in defaults for high color pairs

- Add a config debug, downgrade color error to debug since we'll
  frequently have this happen unless TERM=xterm-256color or similar.