* clarify federation Authorization header an add destination property
* add changelogs
* some clarifications
* more clarifications, fixes
* use HTML in the added-in/changed-in shortcodes
* Apply suggestions from code review
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Introduce a new "added-in" template and use it on endpoints
* Use "added-in" on schema properties too
* Annotate sections of the spec with their added versions
* Demo of "added-in" on a room version (to be fleshed out)
* Use clearer versioning semantics
* Update and fix validator for Swagger custom properties
* Fix docs