Release 1.4.0

[lmars]

Summary

This PR releases version 1.4.0 of the ably-go SDK.

This is a minor version bump (1.3.0 → 1.4.0) because it introduces new functionality — support for Message Updates, Deletes, and Appends — in a backwards-compatible way. Per semantic versioning, new features warrant a minor version increment.

Changes

• Message Updates, Deletes, and Appends (feat: Implement Message Updates, Deletes, and Appends #697) — the headline feature: published messages can now be updated, deleted, or appended to after the fact using the new UpdateMessage, DeleteMessage, and AppendMessage operations
• Add V2 operation types for protocol v6+ (Add V2 operation types for protocol v6+ #695)
• state: add v2 object create types (state: add v2 object create types #699)
• Switch to github.com/coder/websocket (Switch to github.com/coder/websocket #698)
• fix: Prevent deadlock when releasing a realtime channel (fix: Prevent deadlock when releasing a realtime channel #693)
• Only run tests on the latest two Go versions (Only run tests on the latest two Go versions #700)

Release checklist

• Version bumped in ably/proto_http.go
• CHANGELOG.md updated
• PR approved and merged
• Tag v1.4.0 pushed
• GitHub Release created
• Ably Changelog entry posted (headwayapp)

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features

  • Added support for message updates, deletions, and appends in real-time channels.

• Bug Fixes

  • Fixed deadlock issue when releasing a realtime channel.

[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: f347b9bb-b034-4774-8a64-e065f3c5f7f0

📥 Commits

Reviewing files that changed from the base of the PR and between 1c24f68 and cf8247b.

📒 Files selected for processing (2)

• CHANGELOG.md
• ably/proto_http.go

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Walkthrough

The pull request bumps the Go client library version from 1.3.0 to 1.4.0. A new release section is added to the changelog documenting new message operation capabilities, bug fixes including deadlock prevention, and CI improvements. The internal version constant is updated to reflect this release.

Changes

Cohort / File(s)	Summary
Documentation & Version CHANGELOG.md, ably/proto_http.go	Version bumped to 1.4.0. Changelog entry added documenting new Message Updates, Deletes, and Appends features, deadlock fix, and CI/test enhancements. Client library version constant updated to reflect the new release.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A version hop from one-three to one-four so bright,
New messages dance, updated, deleted with might,
The changelog sings, no deadlocks in sight,
A release so clean, the version just right!

🚥 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 1.4.0' directly and clearly describes the main purpose of the PR: releasing version 1.4.0 of the ably-go SDK with new features and fixes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch release/1.4.0

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[sacOO7]

LGTM