Yeetus Experimentus!
Disable's the Experimental Settings popup, which appears when you create or load world.
Icon by David S
Stone variations vanilla chests.
Adds hammers to the game that are able to mine in a 3x3, 3x3x3, 5x5x1, 5x5x3 and finally a 5x5x5! They're pretty awesome.
Allows modpack developers to define default server properties. Typically used for things like a default level type.
Speeds up the leaf decaying process