Getting Spooktober-ready with v. 2.18

We are getting ready for a month of frights and delights.

Version 2.18.1 patch notes:

• Global performance optimization on puzzle creation.
  
• Added some tooltips to the settings menu.
  
• Copied the Twitch settings to the main settings menu.
  
• Fixed bug where ding-dongs would not appear on top of the screen.
  
• Fixed a handful of minor bugs.
  
• Reworked some activities and balancing issues.
  
• Fallback audio for Mod activities.
  
• Prepping soundtrack and easter eggs for Spooktober.
  
• Improving !avoid and !desire commands.