Explain stout output better
Use emplace_back to construct triangles
Tell compiler to use c++11
Make an actual sphere class

This seems a bit over the top, but now everything is uniform, and can
use sphere for bounding volumes.
read .obj files instead of .off

its just easier to get obj files, and converters to obj files
fix mesh quad test
make vector components public

this is hopefully temporary
Add early exits to triangle intersection

check the normal
check the bounding sphere
log more messages