Initial release with working scene reader and underlying entities.
Documentation will be added in a revision soon. For the time being, the interface objects describe how to use the derived types (ex. Shape_t, Camera_t, Ray_t, Material_t).
Scenes and assets are included in this release.
A pre-compiled Windows and Ubuntu 18.04
Running dependencies are imagemagick for image saving and reading, and freeglut3 for OpenGL rendering. For Windows a freeglut DLL is included.
Mac version will be added in a future release.