Bukkit

+ Added boss bar status info to "/sb".
+ Added several variables for boss bar broadcast (see documention on website for further information).
+ Added new PluginMetrics stats (may not work properly - testings ongoing)
! Improved code and removed unnecessary/redundant code nesting.
! Fixed problem that you could start and stop the boss bar broadcast after turning it off in the bossbar.yml and reloading the plugin via "/sb reload".
! Fixed problem that tried to convert the "new" ignore.yml if you have deleted the "ignore.yml.OLD" file.
- Removed (for now) ignore - support for servers with "online-mode=false" due to the fact that there are many problems with checking the UUID (gets re-implemented in v1.8).

-> Completely compatible with 1.7.9, 1.7.2, 1.6.4 and previous builds!

There aren't any caveats. You can use this version/plugin safely.