Update to use versioning system.

Update to use versioning system.

Solved unbuilded stone overhangs to be walkable.

Fixed leaking on stone overhangs.

Fixed dirt not displayed in FT piles.

Fixed the slope to be used when is not yet build.
Fixed a StoneWall bug.

Slope and stone pieces are back. Remember that stone pieces, until TAPI and more group mod will be fixed, can ce vizible only in dev mode.

Updated for game version 0.6.5
Still unable the fix the slope and stone pieces, so, now they don't exist.
May need to delete the Dirt\Specifications\PrefabGroups folder, Leave-it will cause the game to crash.

Fixed a crash.