This came in as a request on meta to include the raw field in the post
webhook serializer.
https://meta.discourse.org/t/-/49045/55?u=blake
Including this field can prevent needing to make a 2nd API request to
get the raw field of a post.
It would be handy down the road if we updated the webhook ui to specify
fields or arguments that you wanted to be included in the serialized
data, but most requests I've seen to update the serializers have been
valid requests that are good to add anyways, so I don't think we have
reached that point yet.
1ce6ff0a55