Rename `decouple` keyword argument to `save`.
Rename `decouple` keyword argument to `save`.

* Always set `is_repeat=False` on variation events, even when not saving
  immediately.

ic-labs/django-icekit,ic-labs/django-icekit,ic-labs/django-icekit,ic-labs/icekit-events,ic-labs/django-icekit,ic-labs/icekit-events,ic-labs/icekit-events