#HighLow!hl on <number> - Turns the game on and tells the bot to pick a number between 0 and <number>.
!hl off - Turns the game off.
!hl help - Shows the commands.
!hl activate - Activates the game so others can play.
!hl deactivate - Deactivates the game so others can't play.
!guess <number> - Guesses <number> and tells you if your guess was correct, too high, or too low.