Merge pull request #27 from stacknil/codex/docs-release-prep-v0.4

[codex] docs: prep v0.4.0 changelog

Merge pull request #26 from stacknil/codex/docs-release-prep-v0.3

[codex] docs: prep v0.3.0 release notes

docs: prepare v0.2.0 changelog

Merge pull request #3 from stacknil/stacknil-patch-1

Update README.md