Game & Demo Update v0.509

Hi adventurers,

v0.509 is now available on the game and demo branches, it's a small patch hopefully improving games on big maps:

• Fixed pathfinding issues on big maps
  
• Fixed enclosed area detection issues with fortress walls
  
• Fixed an issue with heroes being stuck when their mood is too low
  

Thanks for playing, and please don't forget to leave a review, it helps a lot!