backfill changelog for 0.22.0
* Remove size limits on namespaces, dataset names, and and source connection urls [#1925](https://github.com/MarquezProject/marquez/pull/1925) [@collado-mike](https://github.com/collado-mike)
* Update namespace names to allow `=`, `@`, and `;` [#1936](https://github.com/MarquezProject/marquez/pull/1936) [@mobuchowski](https://github.com/mobuchowski)
* Time duration display in web UI [#1950](https://github.com/MarquezProject/marquez/pull/1950) [@phixMe](https://github.com/phixMe)
+* Enable web UI to access API via Helm Chart [@GZack2000](https://github.com/GZack2000)
## [0.21.0](https://github.com/MarquezProject/marquez/compare/0.20.0...0.21.0) - 2022-03-03
