Add: preliminary implementation of Wavefront OBJ format importer.
Add: various improvements.
Add: support for OBJ smoothing group;
Add: a few minor improvements.
Remove: the less-than-half-baked importer for Collada format;
Remove: the problematic importer for 3DS format.
Add: mesh triangle grouping based on normals;
Fix: a few minor problems.
Overwrite a temporarily modified file.
Adding: support for terrain.
Add: more implementations for the terrain support;
Fix: object and messh visibility checking with respect to camera frustum.
Add: a fixed and improved computation of normals for terrain vertices.
Add: support for adaptive terrain meshing according to camera position.
Add: support for terrain side and bottom mesh generation.
Add: preliminary support for terrain texture.
Add: a fix and improvement to adaptive terrain meshing;
Add: a fix and improvement to terrain rendering;
Remove: some obsolete code from dao_renderer.c;
Add: a minor improvement to terrain meshing that can reduce triangles by about 40%.
Update structure member field names.
Add: some improvements to the renderer.
Add: preliminary support for bump mapping.
Add: a minor improvement to the fragment shader to handle transparent textures;
Fix: a minor bug in terrain meshing.
Change: scene node transformation to scale, rotation and translation components.
Add: 3D example and media files.