Release v0.4.0

Support acknowledged breaking changes in surface diff

The surface diff script now checks .surface-breaking for intentional
removals. Flags moved from `projects` to `projects list` are listed
as acknowledged breaking changes for v0.3.0.

Release v0.2.3

Release v0.2.2

Fix AUR publish: match exact archive filenames, use 37signals author

Release v0.2.0

Switch to GitHub-native release notes (basecamp#159)

Add .github/release.yml to categorize PRs by label (Features,
Bug Fixes, Documentation) and exclude dependabot noise. Switch
goreleaser to `github-native` changelog so release pages get
PR links, @mentions, and contributor sections.

First release