…hting

 * The plug-in now executes `ctags --version` on startup to verify that
   the correct version of Exuberant Ctags is installed because some
   systems (including Mac OS X apparently) ship with a `/usr/bin/ctags`
   installed that doesn't understand the extensive set of command-line
   arguments supported by Exuberant Ctags.

 * When a file was edited multiple times the dynamic highlighting
   wouldn't refresh because the plug-in thought the highlighting was
   still in effect while in reality it was cleared by reading the file
   again. Now the highlighting will be refreshed on the next CursorHold
   event like it's supposed to.