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* A new declarative way to add generic relation fields to your model: any number or generic relation, any field name(s);
* Ability to add a generic relation for a restricted set of models. You can either enumerate all allowed models or all denied ones;
* An alternative way to add these fields: with a decorator (actually, it's not a new feature, just saved from unpublished release);
* The ``ct`` helper now caches own results;
* Added support for Python 3.6;
* Added support for Python 3.7;
* Added Django 2.0 and 2.1 support;
* Removed support for Python 3.3 and older;
* Removed support for Django 1.10 and older