16 almost compiles, just a few residual issues:

ASM:
Resolved.

Textures:
done other than liquids

Fluids

• converting of fluids to an ItemIdentifier, as fluids are not Items any more.
• rendering code needs an update

Network:
resolved, other than fluid NBT tags

Fluid stuff seems to work now. Even the settings converting from old 1.5 worlds seems to do it's job correcly.

RelaunchClassLoader -> net.minecraft.launchwrapper.LaunchClassLoader

IClassTransformer -> net.minecraft.launchwrapper.IClassTransformer

updated initial post, 16 only has some fluid handling to do.

• Update IC2 integration
• Update NEI integration