Connected Double Slabs By Blond

Update to 26.3 and added poplar and concrete slabs. d[^ ^ ]
(Wool slabs are still a work in progress. [' > ,])
Also fusion support has been refactored to be closer to the MCPatcher format, so things should look the same regardless of the mod you're using. [ ' '],-
And uuuuh the air.json block model file is no longer used to disable Continuity if you have both Fusion and Continuity installed at the same time for some reason. There's a different file for that now. _[' ,]_