Client 0.1.8 changes

• The renderer engine has been refactored that might have fixed some possible memory leaks.
  

Server changes

• Fixed an incorrect 'energy available' condition in the StructureSpawn.spawnCreep method, now it should return ERR_NOT_ENOUGH_ENERGY properly.
  
• Fixed the construction sites limit, each player can have not more than 10 construction sites at the same time.
  
• Fixed an edge case in fatigue calculation.
  
• Improved the matchmaking system to increase diversity of opponents.