scigraph.py closes https://github.com/tgbugs/pyontutils/issues/3
scigraph.py closes https://github.com/tgbugs/pyontutils/issues/3

Local caching of results by scigraph_client libs is now possible
by passing cache=True during class init.

tgbugs/pyontutils,tgbugs/pyontutils,tgbugs/pyontutils,tgbugs/pyontutils