Add OfflinePlayer, ItemEntity, Update Entity, Player
Fix License, Javadocs
Add basic block events

Add license headers
Fix LiquidSpreadEvent
And re-add renamed file...
Merge branch 'master' of https://github.com/SpongePowered/SpongeAPI into blockevents
Merge remote-tracking branch 'origin/blockevents' into blockevents
Add block break causes

Add license headers
Merge branch 'blockevents', remote-tracking branch 'upstream/master' into blockevents
Add more block causes, move things, fix Javadoc...

Add license headers
Merge branch 'blockevents', remote-tracking branch 'upstream/master' into blockevents
Rewrite block cause system to be more extensible
Add EntityInteractionType enum
Merge pull request #206 from Phroa/master

Add EntityInteractionType enum, allowing for specifying how an entity is being interacted with.
Merge branch 'blockevents', remote-tracking branch 'upstream/master' into blockevents
Make Cause a class, add new Reason, move things
Further improved scheduler API
Extend CauseTracked
Merge branch 'blockevents', remote-tracking branch 'upstream/master' into blockevents
swap logging to use slf4j to allow implementations to pick the underlying implementation