expose and use serialise(for_db)
docs
allow types with no attributes to be deleted
remove delete TypeSystem from test
fix for getting neo4j info in 1.9.4
don't bubble non-zero exit code
Merge pull request #91 from onefinestay/travis_debugging

fix for getting neo4j info in 1.9.4
Merge branch 'master' into serialize_for_db
Merge branch 'master' into delete_types_without_attrs
changelog + version bump
Merge branch 'master' into delete_types_without_attrs
changelog and version bump
Merge branch 'delete_types_without_attrs' of github.com:onefinestay/kaiso into delete_types_without_attrs
Merge pull request #90 from onefinestay/delete_types_without_attrs

Allow types with no attributes to be deleted
reducing the number of http calls per query
stray pass
removed more get_properties() calls
removed dependency on star, end attributes for relationships for save()
addressing codereview
merging reduced-http-calls