Merge pull request #374 from aufdemrand/morph-working

Fix dInventory errors with double chests and non-Player NPCs. Allow horse, chest minecart and hopper minecart entity dInventories to be used
Update follow to allow targeting, fixes #373

Now you can make your NPCs chase chickens! Yippee!
Update Follow in the command registry
Merge branch 'master' of https://github.com/aufdemrand/Denizen into morph-working