Update context_client to use Python3 basestring
Update context_client to use Python3 basestring

jmuhlich/indra,sorgerlab/belpy,sorgerlab/belpy,sorgerlab/indra,sorgerlab/belpy,bgyori/indra,pvtodorov/indra,bgyori/indra,johnbachman/belpy,johnbachman/indra,jmuhlich/indra,pvtodorov/indra,pvtodorov/indra,johnbachman/indra,johnbachman/belpy,johnbachman/indra,jmuhlich/indra,pvtodorov/indra,sorgerlab/indra,bgyori/indra,johnbachman/belpy,sorgerlab/indra