Wurst 6.11 - MC 1.12.1 Support, Better Keybind System

WARNING: This old version is vulnerable to the Log4Shell exploit. Do not use this in multiplayer without a patch.

Changelog

Added Minecraft 1.12.1 compatibility mode. (experimental) (MC 1.12 & 1.12 OF)
Renamed .binds clear to .binds remove.
Renamed .binds clear-all to .binds remove-all.
.binds add will now add new keybinds instead of adding new commands to existing keybinds.
Keybinds can now be set to either toggle hacks or run commands. (.binds add r killaura and .binds add r .t killaura are both valid.)
Keybinds that don’t start with a dot will now be interpreted as commands rather than chat messages. (.binds add h Hello world. is no longer valid, but .binds add h .say Hello world. is.)
In addition to using ; in keybinds to separate multiple hacks/commands, one can now also use ;; to run a single command that contains ;. (.binds add h .say Hello;; world. is now valid and will output Hello; world. when pressed.)
Improved Keybind Manager performance.
Keybinds are now saved in a different format, but older keybinds.json files will be updated automatically.
Re-worded an error message in the installer that some users found difficult to understand.
Removed .binds set.