Initialized proposed graffy branch
Added the header to include the C/C++ Std Library
Added APSP and diameter
Added hop dist
Added  more Community Validation Tests
Fixed some bugs in community tools
Added generic versions of obtaining neighbors of a node into an stl container
Fixed presence of self loops in hop_dist
Added degree containers
Fixed Variance Bug
Variance Bug Did not Exist :(
Removed references to id_t
Removed references to id_t
Added computation of more metrics
Deleted
Added Edge Iterator
Fixed Compilation Errors in Edge Iterator
Fixed Bug in iterators
Added Global Confusion Matrix