D:YAML 0.8.0 was released a few days ago.

D:YAML is a project for reading or writing yaml files, 100% written in D.

The project is getting closer to a 1.0 release, which means official test suite supported and more D-ish way of doing stuff (range or less class for example).

see https://github.com/dlang-community/D-YAML/releases/tag/v0.8.0 for more details.
User of D:YAML might encounter breaking changes in this release, as the project follows the semantic of semver.