code: def get_release_data(self):
          
          previous_package = self.get_previous_release()
          if previous_package:
              previous_version = previous_package.version
              previous_revision = previous_package.revision
          else:
              previous_version = None
              previous_revision = None
  
          if self.vcs is None:
              return dict(vcs="None",
                          previous_version=previous_version)
  
          revision = None
          with self.repo_operation():
              revision = self.vcs.get_current_revision()
  
          changelog = self.get_changelog()
  
          # truncate changelog - very large changelogs can cause package load
          # times to be very high, we don't want that
          maxlen = config.max_package_changelog_chars
          if maxlen and changelog and len(changelog) > maxlen + 3:
              changelog = changelog[:maxlen] + "..."
  
          return dict(vcs=self.vcs.name(),
                      revision=revision,
                      changelog=changelog,
                      previous_version=previous_version,
                      previous_revision=previous_revision)
docs: Get release data for this release.
  
          Returns:
              dict.