chore: prepare for v0.3.0 (#45)

chore: prepare for v0.2.1 (#41)

chore(release): prepare for v0.2 (#36)

This also adds `CHANGELOG.md` and a git-cliff config for generating the
changelog easily.

chore: bump version to 0.1.1

feat: add more types and methods for standard nodes (#25)

* Add methods to get standard /reserved-memory subnodes and properties.

* Add methods to get standard /chosen node and properties.

* Add more methods for standard properties on CPU nodes.