upgrade for homology

Homology mod 2 using Smith Normal Form available for small examples
Constructors for numpy matrix and pandas dataframe added

hotfix/hyp-109

updated code to be compatible with NetworkX 2.4.
removed untested code that should not have been pushed

hotfix/hyp-43

fixed drawing/rubber_band.py so edge labels won't disappear

fixed Hypergraph.restrict_to_nodes

The Hypergraph.restrict_to_nodes function was deleting memberships of nodes. We updated the method. now the new restricted hypergraph does not share edges or nodes with the original hypergraph, although the reference uids will remain the same.

v0.2.4: Merge pull request #13 from pnnl/develop

Develop

First PYPI release

Merge pull request #11 from pnnl/develop

Develop

HyperNetX v.0.2

Merge pull request #7 from pnnl/develop

Develop