* Update spanish translation * Add testing for Django 1.11 and Python 3.6 * introduce isort and flake8 in the CI * [docs] Fixed links to external apps * Improved auto-slug in TagBase to support UUID pk * [docs] Added contribution guidelines
0.22.0
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* **Backwards incompatible:** Drop support for Django 1.7
0.21.6
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* Fix case-insensitive tag creation when setting to a mix of new and existing tags are used
0.21.5
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* Check for case-insensitive duplicates when creating new tags