<Project>
  <!-- 
    - Single place to put the release version number. This is imported
    - in both testing/* and src/*. We may eventually want to have
    - divergent versions, but for the moment this keeps things simpler.
    -->
  <PropertyGroup>
    <VersionPrefix>2.2.0</VersionPrefix>
  </PropertyGroup>
</Project>
<Project>
  <!-- 
    - Single place to put the release version number. This is imported
    - in both testing/* and src/*. We may eventually want to have
    - divergent versions, but for the moment this keeps things simpler.
    -->
  <PropertyGroup>
    <VersionPrefix>2.2.1</VersionPrefix>
  </PropertyGroup>
</Project>
Update release version to 2.2.1
Update release version to 2.2.1

When this is merged, we can do a release build of 2.2.1
