Heat 0.12

Hello there my fellow ppl! 

Finally once again a little update: 

•  New Environmental assets (Trees, cliffs, ...)
• The building system is a bit more polished
• new shaders
• new static map till the procedural world is in a better state
• Basic damage particles
• Combat is reworked a bit - not final but should be a bit more fun
• Mobs - Goblin, Troll, Wolf 
• simple mobs avoidance