1.14

Finally an update!

Changes:
- slightly more precise raycasting
- carpet block and carpeted model should have the same size now

Performance Improvement:
- stop checking for slabs & carpetable block's model since they always have the same model anyway
- only check model when there is a change in block state (changing shape, facing direction change, etc...) of the stairs
- instead of hardcoded models value into the datapack, I use a bit of math to determine which model should be show which reduces the commands from 16 lines to 3 lines per shape