Natures Emerald

Changelog:

-Tweaked most blocks to behave and break more reasonably and also resist explosions more accurately.

-Added Greenstone. Can be smelted into Greenstone Bricks and crafted furthermore into a Chisel variant. Or can be crafted to make Polished Greenstone.

-Changed the levels in which the ores spawn at. Matches back better with older version heights. (Heights listed on Overview of mod.)

-Added Ash and Cedar stairs. (Upside down placements are a little buggy. But otherwise good.) Crafting recipe makes 6 stairs for a 1:1.