PyMOAB Updates/Improvements

• exposure of the union/intersection flag for get_adjacencies

• addition of a few more convenient Range methods (contains, all_of_type, all_of_dimension) to the PyMOAB Range class

• refactor of Range print method for a better string representation of the PyMOAB Range class

• allow a single entity handle to be passed to the get_coords method

• exposure of MOAB tag name/size conventions through the types module

I've included a commit which updates the *.cpp files that are part of the module, but now is probably a good time (no release pressure) to address a more permanent workflow for how those files (generated by Cython compilation) should be updated and changed going forward.