As a part of consolidating the CI services in #791 to use just Azure Pipelines, I missed that we are still linking to the Appveyor package server. This issue discusses bringing that functionality back.

A few possibilities

• Publish alpha packages automatically to the main nuget feed any time there is a version bump in build.proj
• Push nuget packages to appveyor's nuget feed via a custom build step from azure pipelines (docs)
• Write some custom scripts to work around the msbuild issues in Appveyor