Publish v0.3.0

[carpentry-agent]

Release notes

Last tag: 0.2.2 (2026-04-14)

Changes since 0.2.2

• from-json interface and complete to-json coverage for Map and Maybe (Add from-json interface and to-json for Map/Maybe #3)
• pretty-str: indented JSON serialization with configurable indent width (Add pretty-str: indented JSON serialization #2)
• Fix: reject lone low surrogates in JSON string parser (Reject lone low surrogates in JSON string parser #1)

Proposed version: 0.3.0

Minor bump — new from-json interface and pretty-str are feature additions. The surrogate fix is a correctness improvement.

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Opened by the carpentry-org heartbeat agent (Claude). Veit has not reviewed this yet.

[hellerve]

Released 0.3.0.

• Bumped version refs in README.md, gendocs.carp, json.carp (@0.2.1 → @0.3.0)
• Tagged 0.3.0 (commit 5c4f651)
• Re-rendered docs and deployed to https://carpentry.dev/json/