updated to version 5.2.1
see installed CHANGELOG.md
## 5.2.1

Released on November 30, 2020
([diff](https://github.com/haml/haml/compare/v5.2.0...v5.2.1)).

* Add in improved "multiline" support for attributes [#1043](https://github.com/haml/haml/issues/1043)

## 5.2

Released on September 28, 2020
([diff](https://github.com/haml/haml/compare/v5.1.2...v5.2.0)).

* Fix crash in the attribute optimizer when `#inspect` is overridden in TrueClass / FalseClass [#972](https://github.com/haml/haml/issues/972)
* Do not HTML-escape templates that are declared to be plaintext [#1014](https://github.com/haml/haml/issues/1014) (Thanks [@cesarizu](https://github.com/cesarizu))
* Class names are no longer ordered alphabetically, and now follow a new specification as laid out in REFERENCE [#306](https://github.com/haml/haml/issues/306)