created TVec interface and added functions with TVec parameters
- added vector
- added more functions to snap-python
- added new functionality to snap-python
vector code updates
Merge remote branch 'upstream/master'

Conflicts:
	swig/Makefile
	swig/snap.i
fixing swig/Makefile and swig/snap.i
fixing Makefile and snap.i
added code for node and edge generators, C++ template dispatch from Python
added support for TUNGraph and TNGraph, improved the code for TNEANet, implemented node and edge generators, implemented GetId() for TUNGraph and TNGraph, added Version variable, improved basic test program for TUNGraph, TNGraph, and TNEANet
added utilities and files to generate Python dispatch tables
Merge pull request #17 from roks/master

added support for TUNGraph, TNGraph