Here lies a vendored copy of protojson with some minor alterations.

Unfortunately we need a few things that the official stack won't let us do:

1. We need to support our old JSON with camelCase enums while we migrate to the canonical SCREAMING_SNAKE_CASE enums
2. We've decided to support a shorthand JSON serialization for our Payload type so that our users have a better experience

All code herein is governed by the LICENSE file in this directory (barring the maybe_marshal code we added).