move color code to separate jQuery plugin inlined in the Flot code
(and hosted here for the time being), fixup some various other little
things in preparation for the 0.6 release
git-svn-id: https://flot.googlecode.com/svn/trunk@220 1e0a6537-2640-0410-bfb7-f154510ff394
134), add new hooks and new API for interactive plugins, move
crosshair support to plugin
git-svn-id: https://flot.googlecode.com/svn/trunk@159 1e0a6537-2640-0410-bfb7-f154510ff394