Release v2.20.0

[VeskeR]

Release PR for protocol v6 support introduced in #2179, and history function in useChannel hook in #2177

Summary by CodeRabbit

• New Features

  • Added support for protocol v6 and LiveObjects GA, including new payload fields and deprecated operations.
  • Partial sync support for LiveObjects state.
  • Support for server-initiated MAP_CLEAR operations.
  • useChannel hook now returns history information to surface past messages.

• Chores

  • Package version and changelog updated for release 2.20.0.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 23e15aaf-0038-4b85-809a-fe331b973788

📥 Commits

Reviewing files that changed from the base of the PR and between 172014a and 61a4470.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (3)

• CHANGELOG.md
• package.json
• src/platform/react-hooks/src/AblyReactHooks.ts

---

Walkthrough

This PR updates the package and exported version from 2.19.0 to 2.20.0 and adds a new CHANGELOG.md entry for v2.20.0 documenting Ably protocol v6, LiveObjects typings/partial sync, server-initiated MAP_CLEAR, and a history return from useChannel.

Changes

Cohort / File(s)	Summary
Version Updates package.json, src/platform/react-hooks/src/AblyReactHooks.ts	Bumped package and exported version from 2.19.0 → 2.20.0; agent/version constant updated.
Changelog CHANGELOG.md	Added v2.20.0 entry with four bullet points: LiveObjects GA and protocol v6 changes (new payload fields, deprecated ops), partial LiveObjects state sync, server-initiated MAP_CLEAR, and useChannel returning history.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐇 I hopped from two-point-one-nine to two-point-two-oh,
New protocol notes and LiveObjects in tow,
MAP_CLEAR breezes, partial sync hums,
Hooks return history — off the changelog I run! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Release v2.20.0' directly and clearly summarizes the main purpose of the changeset—preparing a release for version 2.20.0 by updating the changelog, package version, and version constant.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch release/2.20.0

📝 Coding Plan

• Generate coding plan for human review comments

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[lawrence-forooghian]

LGTM but also would like to know the answer to your Slack question of whether we want to advertise the fact we're no longer public preview

[mschristensen]

I think we can just add this to the CHANGELOG entry:

"With this release, the ably-js LiveObjects API is no longer in Public Preview and is now generally available."

[VeskeR]

I think we can just add this to the CHANGELOG entry:
"With this release, the ably-js LiveObjects API is no longer in Public Preview and is now generally available."

Done 👍