Updates in Build 2000

- fix for left and right mouse click (if windows settings are set for left handed)
- fix for picking up jumping barrels
- save finished level stats (highest skill map was beaten at and number of secrets found)
- added more steam achivements:

• defeat bosses
  
• defeat rare enemies
  
• beat the game on hard (warrior and up)
  
• find all secrets on a level
  
• find all 88 secrets in the game