You can now prevent players from getting experience or currency when mining blocks
they or other player have placed. Simply add |!player at the end of your item queries.
Note that you must be using LogBlock or HawkEye for this feature to work with blocks
placed more than ten minutes in the past.
A message queue system. Now messages of similar actions, such as mining diamond,
will be combined and occur less frequently (configurable).
Negative rewards are counted as penalties, and will revoke certain actions when a player
has insufficient funds (currency or experience). If you add, say, a cost of 5 exp to place TNT,
a player will be unable to place TNT if he or she has zero experience.