Fixed bugs:
- Handle duplicate key value violates unique constraint "environments_trait_trait_key_identity_id_8b22a322_uniq" #370
Merged pull requests:
- fix: update django-admin-sso version to support django 2.1+ authenticate #381 (gagantrivedi)
- fix(trait/create): use update_or_create to avoid race condition #371 (gagantrivedi)