Update notes for version 0.2.31

All player skills are complete!

• Adjustable dungeon and combat speeds
  
• Fix critical hit % with Magic Mastery and Empowered Staff
  
• Reorganize Master & Mystic skills
  
• Add Mystic Ki Aura skill
  
• Stone/Iron/Obsidian wall skills to Master
  
• Fix some typos
  
• Mystic Spiritual and Universal Alignment skills added
  
• Add Mantra to Mystic
  
• Add Dying Breath skill to Master