Release v1.8.0

[andystaples]

Summary

Cuts a coordinated v1.8.0 release for both packages from main:

• durabletask → tag v1.8.0
• durabletask.azuremanaged → tag azuremanaged-v1.8.0

Changes

• Bump durabletask version 1.7.2 → 1.8.0 (pyproject.toml).
• Bump durabletask.azuremanaged version 1.7.2 → 1.8.0 and raise dependency floors (durabletask>=1.8.0, durabletask[azure-blob-payloads]>=1.8.0).
• Move Unreleased changelog entries into a new ## v1.8.0 section in both CHANGELOG.md and durabletask-azuremanaged/CHANGELOG.md.

Changelog highlights (v1.8.0)

durabletask

• ADDED: TaskHubGrpcClient.rewind_orchestration(), Task.result alias, bind_context/clear_context exports.
• FIXED: timezone-aware timer scheduling, orchestration version presence check, genericEvent replay handling, legacy lock-granted entity response, when_all waiting for all children, worker reconnect after GetWorkItems stream reset.

durabletask.azuremanaged

• Updates base dependency to durabletask v1.8.0.
• ADDED: rewind_orchestration() on the DTS clients.
• FIXED: DTS workers stopping permanently after a GetWorkItems stream reset.

Commit coverage

• Core (v1.7.2..HEAD): Add rewind support #121, Fix durabletask issues surfaced during Azure Functions investigation #174, Fix when_all to wait for all tasks before surfacing failures #173, Reconnect workers after peer stream cancellation #176 — all represented.
• azuremanaged (azuremanaged-v1.7.2..HEAD): Add rewind support #121, Reconnect workers after peer stream cancellation #176 — all represented.

Follow-ups (after merge)

• Create tags v1.8.0 and azuremanaged-v1.8.0 on the merge commit.
• Draft the two GitHub Releases from those tags.

[Copilot]

Pull request overview

Prepares a coordinated v1.8.0 release for both the core durabletask SDK and the durabletask.azuremanaged provider by bumping package versions and rolling changelog entries into versioned release sections.

Changes:

• Bumped durabletask package version to 1.8.0.
• Bumped durabletask.azuremanaged package version to 1.8.0 and raised its durabletask dependency floors to >=1.8.0 (including the azure-blob-payloads extra).
• Moved the prior “Unreleased” changelog content into new v1.8.0 sections for both packages.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
pyproject.toml	Bumps core package version to 1.8.0.
durabletask-azuremanaged/pyproject.toml	Bumps provider version to 1.8.0 and updates dependency floors to durabletask>=1.8.0.
CHANGELOG.md	Creates a v1.8.0 section and places release notes under it.
durabletask-azuremanaged/CHANGELOG.md	Creates a v1.8.0 section and places provider release notes under it.