Counter

• Further performance improvements
  
• Improved cancel interaction, should truly cancel at anytime.
  
• Improved signs
  
• Added permissions for each sign
  
• Arguments are now mainly optional. Only need 1 to start count downs.
  
• Added intervals
  
• Removed Prefix and Suffix config message, replaced with a single message
  
• More configuration, including %t, %p, %w and %i

Currently all counts and commands are global. Meaning players with the correct permission can start, stop and cancel any current count.