Azure-functions-durable-extension: Release items for v1.8.0

[cgillum]

As part of the release, the following items need to be taken care of:

• [x] Run private scale tests and ensure no regressions
• [x] Publish updated versions of DurableTask.Core and DurableTask.AzureStorage to nuget.org
• [x] Draft release notes
• [x] Merge all features and fixes into the master branch
• [x] Update .NET API docs at https://azure.github.io/azure-functions-durable-extension
• [x] Publish signed version of Microsoft.Azure.WebJobs.Extensions.DurableTask to nuget.org
• [x] Update samples to point to the latest nuget packages
• [x] Create a PR in the Azure Functions templates repo to update templates to the latest version
• [x] Close out or punt remaining GitHub issues for the current milestone
• [x] Update official docs under https://docs.microsoft.com/en-us/azure/azure-functions/durable
• [x] Post announcement on App Service Announcements GitHub repo

[olitomlinson]

Any ETA on 1.7.2?

Happy to test it as a pre-release pkg when you are ready!

[cgillum]

I decided to skip 1.7.2 and go straight to 1.8.0. I updated a pre-release package here if anyone wants to give it a try:
https://www.myget.org/feed/azure-appservice/package/nuget/Microsoft.Azure.WebJobs.Extensions.DurableTask/1.8.0-rc

I should hopefully be able to get the final release done by next week.

[olitomlinson]

1.8.0-rc tested with 11,000 Orchestrator instances.

Specifically, the changes around waiting for external events have produced expected results.