Client Changes:
Fade Horse as you look down
Horse Head Pitch offset
Horses named `jeb_` become rainbow
Sprint + Inventory to open survival inventory
*Horse Buff pulls from your Minecraft keybinds, so if you change your inventory/sprint key, that will change what you need to press to access your survival inventory
Server Additions:
Improve "Step Height" capability
Increases horse step-height from 1 block to 1.1 blocks.
This makes riding horses around path blocks way less frustrating.
Due to issue #7, nether portal travel will be off by default while I diagnose what is leading to the improper travel.