code: function normVersion(tag) {
      var parts = new semver.SemVer(tag);
      var prerelease = "";
  
      if (parts.prerelease && parts.prerelease.length > 0) {
          prerelease = hashPrerelease(parts.prerelease);
      }
  
      return [
          parts.major,
          parts.minor,
          parts.patch
      ].join('.') + (prerelease? '.'+prerelease : '');
  }
docs: Map a semver version to a windows version