Bukkit

+ Added support for suffix in "/sb broadcast".
+ Added "/sb bossbar list" -> "- simplebroadcast.bossbar.list"
+ Added "/sb bossbar next" -> "- simplebroadcast.bossbar.next".
+ Added "/sb bossbar help" -> "- simplebroadcast.bossbar.help".
+ Added new design for messages with commands in "/sb list".
+ Added support for JSON messages (see https://SimpleBroadcast.net/documentation/JSON for more information).
+ Added support for vanished status by VanishNoPacket (if player is vanished, he gets removed from all variables).
+ Added readme in French, Spanish, Italian, and Portuguese.
! Changed the variable "%randomplayer%" to "%random_player%".
! Updated readme text and translated it into 6 different languages.
! Fixed some typos.
! Fixed bug that you weren't able to start the plugin after changing "enabled" from "false" to "true" in the config combined with a reload.
! Fixed bug that the disable-feature didn't work properly after a setting it from "true" to "false" in the config combined with a reload.
! Fixed bug that the plugin throws an NullPointerException if you try to ignore a player who isn't online while the boss bar is enabled.
! Fixed bug that messages with commands got displayed like a normal message in the message overview ("/sb list").

-> Completely compatible with 1.8.X, 1.7.X, 1.6.X and previous builds!

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