Update v1.15

Hello again, another small release with some improvements and some bugs fixed!

• Stacking and splitting items is now possible
• Enemies are wandering now
• New building tent to speed up time 
• item can now be destroyed in inventory

Bugs

• Turrets behind character should be fixed
• items overlap  in inventory fixed
• quantity text is larger and doesnt show with 1 quantity
• font adjustments
• Most unity warning fixed
• Optimization of rock 05
• Turret edit/remove without turret bug fixed
• inventory handle improved
• crafting with full inventory fixed