Rigid Chess major updates as follows:

• Newly refactored chess engine runs at 140%, on average, of previous chess engine.
  
• Numerous UI updates and enhancements.
  
• Save / Load game refactored to remove security issue.
  
• Save / Load scenarios refactored to remove security issue.
  
• Expanded Help sections.
  
• Added ability to export game state string for analysis. mod, and reimport!