2.8.2

• #9203: Fixes a bug which caused training of UnexpecTEDIntentPolicy to crash when end-to-end training stories were included in the training data.

  Stories with end-to-end training data will now be skipped for the training of UnexpecTEDIntentPolicy.

Improved Documentation

• #8024: Removing the experimental feature warning for the story validation tool from the rasa docs.
  The behaviour of the feature remains unchanged.
• #8791: Removing the experimental feature warning for entity roles and groups from the rasa docs,
  and from the code where it previously appeared as a print statement.
  The behaviour of the feature remains otherwise unchanged.