Added Mekanism support!
The boiler will automatically output Mekanism Steam when prompted to do so by a gas-extracting device, such as a Pressurized Tube set to pull. Boring, liquid good ol' steam will be converted to Mekanism gaseous steam on-the-fly.
Technical stuff: several methods have had their names changed to comply with the new mappings of Forge 36.1.0. I'm not sure whether this should break compatibility with previous versions, but I'm pretty sure it does.