* WIP: remove non-openapi root spec
* Refactor ContentType
Different endpoints will favor one type over another
* Permit different Accept headers per endpoint
* Lint
* Add charset to Content-Type only when used as a header
Keep it out of error messages
* Accept: */* is last resort, not first
* Changelog
* makeMimeList consistently
* Remove schema description from OPTIONS response
* Replace Prelude import for Protolude in middleware
* Remove qualifier from Text type
* Replace Prelude for Protolude, replace 'cs' for 'toS' calls, also change some name bindings
* Replace Prelude in main for Protolude. Replace error calls for panic calls. Also replace cs for toS
* Replace Prelude for Protolude
* Replace Prelude for Protolude in OpenAPI
