Fadedeathdave

I know there's a tutorial on the wiki, but it seems a bit dated, from about 7 months ago, so I want to have the most up to date info from people with experience... How do I add an API to my mod so I could have, let's say a pulverized metal, or a new kind of bee, or something for the magma crucible etc... Thanks in advance to anyone who helps, or at least tries to help