v0.21.0

What's Changed

• chore(deps): update rust crate rmcp to 3.1.2 by @renovate[bot] in #145
• chore(kata): auto-apply by @yukimemi in #146
• fix(sync): stop dropping the push at the end of every exchange by @yukimemi in #147
• chore(deps): update rust crate thiserror to 2.0.20 by @renovate[bot] in #148
• feat(projects): split join and merge into two words by @yukimemi in #149
• feat(sync): leave a peer group, and go back to syncing with nobody by @yukimemi in #150
• chore: release v0.21.0 by @yukimemi in #151

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