Add ASMAPI methods to assist in working with instruction indexes#69

LexManos merged 3 commits intoMinecraftForge:masterMinecraftForge/coremods:masterfrom

Jonathing:feat/jonathing/ASMAPI-once-againJonathing/Forge-JS-CoreMods:feat/jonathing/ASMAPI-once-againCopy head branch name to clipboard