- Add a new advanced model and collision map editor

- Correctly handle absence of vertex normals and texture co-ordinates in BMD files
- Fix issues in DAE exporter when no normals or texture co-ordinates are present
- Fix division by zero issue when reading KCL files for editing and exporting
- Fix bug in BMD importer when converting to triangle strips which resulted in the wrong polylists being replaced
- Add the following features from mibts:
-- Optional grid for precise placement of objects
-- Restriction plane (RP) to snap placed objects to, for example, y = 0.0
-- In the absence of a RP, placed objects snap to the collision triangle the mouse is touching if there is one
-- Alt+{Up | Down | Left | Right | F | B} for top, bottom, left, right, front, and back views in level editor
-- BCA importer now creates smaller BCAs by using the constant-track, same-track, and interpolation optimizations. (by a factor of about 6)
-- Limit size of KCL octree