es.py fixes to preserve Python2 compatibility
ResultSetMulti: fix for python2 backwards compatibility
Merge pull request #349 from CGenie/cgenie

Fix some Python2 backwards-incompatibility issues
PY2 compatibility: forgot about urlunsplit
Merge pull request #352 from CGenie/cgenie

PY2 compatibility: forgot about urlunsplit
Minimum required six id 1.5.2