SpongePowered/SpongeAPI — pull request #149 by MOMOTHEREAL (2014-09-14 02:51:18+00:00)
Title: Add CommandBlock API, Redstone Power-Level for blocks.

Additions:
`CommandBlock`: Contains information of a command block.
`GuiBlock`: An interface for blocks that have a GUI.

Edits:
`Block`: Added Redstone power level.