v0.21.0

What's Changed

• fix(artifacts): print an artifact as it renders, and stop the mermaid drag selecting text by @butschster in #73
• docs: rewrite the README as a product page, with screenshots by @butschster in #75
• feat(skills): methodology the agent loads, and a page to see it on by @butschster in #76
• feat(templates): a kickoff methodology the model reads by @butschster in #77
• feat(roadmap): lay nodes out by stage or by date, as switchable views by @butschster in #78

Full Changelog: v0.20.0...v0.21.0