* CloudEvents I/O format support.
* Updated format doc.
* Remove log lines
* This adds support for CloudEvent ingestion at the http router layer.
* Updated per comments.
* Responds with full CloudEvent message.
* Fixed up per comments
* Fix tests
* Checks for cloudevent content-type
* doesn't error on missing content-type.
http://json.org/ says: `Whitespace can be inserted between any pair of tokens. Excepting a few encoding details, that completely describes the language.`
we do not explicitly need the whitespace between objects in our json, it's entirely optional and soon we will even support it (#830)!
* Improve deadline handling in streaming protocols
* Move special headers handling down to the protocols
* Adding function format documentation for JSON changes
* Add tests for request url and method in JSON protocol
* Fix protocol missing fn-specific info
* Fix import
* Add panic for something that should never happen
