Wood to Coal. I mainly made it for personal use. Good to use with bobs and angels with wood production.
2 wood = 1 coal.

Change Log
1.2.1 - Updated to version 2.1
1.2.0 - Updated to version 2.0 (details, see changelog.txt)
1.1.0 - Updated to version 1.1.
1.0.0 - Updated to 1.0 and also changed the way how wood is made into coal. Now Furnaces are used instead of Assemblers.
0.18.0 - Initial version.