Improved rendering logic
Merge branch 'modelloading' of https://github.com/Shada/edit87 into modelloading
Architectural changes
terrain can be modified somewhat
Working brush tool for hardcoded position
Working mouse picking with non optimized ray vs triangle
Almost working quadtree
Rays hit quads and then checks only the triangles in those quads
Working optimized picking
Culling of terrain that can be done in different levels
Normalizing tool that uses left mouse to normalize to the initial value the cursor points at, and the right mouse to go towards 0
Merge branch 'master' into Engine