Bukkit

• 3.8.0.1818
  fixed an exploit with exp
  added some messages from mog1255
  add Magic and Poison Death causes and messages
  implemented version 3 of metrics, incl tracking of deathtp, tombstone and tomb
  fixed several issues with tombs
  updated to new bukkit event system
  fixed loophole where player suicide doesn't reset kill streak
  fixed issue wolf and slime not recognized
  

Messages for Magic and Poison Death will be updated without a problem, if you want to get the additional messages from mog1255 you will need to let the full deathmessages.yml recreate as I don't overwrite anything in a node.