- standardize use of string/char *, add to style conventions
- standardize Eigen Templates, add to style conventions
- standardize headers-only vs. static library
- clean up tga.h
- standardize igl includes #include "cotangent.h" or #include <cotangent.h>
- implement an IGL_NO_OPENGL and IGL_NO_GLUT compiler option
- clean up edgetopology.h
- clean up mvc.h
- clean up orth.h
- fix bugs in examples/Core/example2.cpp