VsixManifest not updated with appropriate supported versions during build #24
Description
The VsixManifest is not being updated to set the appropriate supported versions for each vsix file generated by the build script.
Version support for VS 2012-2019 is divided between three different vsix files, but the installer thinks each vsix works with all versions because the version range in the VsixManifest is not being updated in the build script.
