IsoOctree library

An implementation of the Unconstrained Isosurface Extraction on Arbitrary Octrees algorithm forked from the original IsoOctree code by Michael Kazhdan.

Main modifications:

• Add an API (the original code was a command line application), see include/IsoOctree/IsoOctree.hpp and example/.
• Port to C++11
• Add CMake installation scripts
• Python bindings