[ttypic]

The 2.0.0 release makes it clear that this SDK is for code that runs on an end user's device. The package is renamed ably_pubsub_device_flutter and offers a single realtime client, PubSubClient.

v2 also removes the REST client and the APIs and client options deprecated in v1.

Summary by CodeRabbit

• New Features
  • The package is now named ably_pubsub_device_flutter. The Realtime client is renamed to PubSubClient, with a createClient() factory.
• Changes
  • Channel release() now returns a future. It releases channels in the initialized, detached, or failed state; other states result in AblyException code 90011 without releasing the channel. Releasing a channel name that does not exist is a no-op.
• Removed
  • The REST client and APIs and options deprecated in v1 are no longer available.

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• CHANGELOG.md

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Walkthrough

The changelog adds a 2.0.0 entry. It documents package and client renames, removed APIs and options, migration guidance, and channel release behavior.

Changes

2.0.0 release notes

Layer / File(s)	Summary
Migration and release contract CHANGELOG.md	Documents the package rename, PubSubClient and createClient(), removed REST and deprecated APIs and options, migration guidance, and the RealtimeChannels.release() return type and channel-state rules.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

Possibly related PRs

• ably/ably-pubsub-flutter#610: Implements the channel release contract described in this changelog.
• ably/ably-pubsub-flutter#609: Covers the channel release state and error behavior documented here.

Merge Risk: Moderate · previous review 9c5b4

This release PR documents a 2.0.0 package, but the package metadata still says 1.2.44. If it is published as-is, the documented ^2.0.0 constraint will not resolve. Bump the version in this PR, or confirm that the release process sets it, before merging.

Pre-merge checks: 4

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title, "Release 2.0.0," clearly identifies the documented release and matches the main change.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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_{A rabbit reads the release notes by moonlit clover,
A new client name hops into view.
Old APIs leave tracks across the page,
Channel states set the release rules,
Then the rabbit tucks the changelog in its burrow.}

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Actionable comments posted: 1

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @CHANGELOG.md:
- Line 17: Update the package version declared by the version key in
pubspec.yaml from 1.2.44 to 2.0.0 so it matches the documented dependency
constraint.

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• CHANGELOG.md

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