Tweaks to __repr__, setup_in_memory helper
Tweaks to __repr__, setup_in_memory helper

--HG--
extra : convert_revision : 541f97c7ea01926e3414430fb8023eb690f22b3f

ningyifan/annotator-store,nobita-isc/annotator-store,nobita-isc/annotator-store,openannotation/annotator-store,nobita-isc/annotator-store,nobita-isc/annotator-store,happybelly/annotator-store