message: re-introduced the star chart with the new URL
  reverting commit
diff: @@ -125,6 +125,11 @@ If you work for a company using **doctest** or have the means to do so, please c
  Contributions in the form of issues and pull requests are welcome as well - check out the [**Contributing**](CONTRIBUTING.md) page.
  +Stargazers over time
  +------------
  +
  +[![Stargazers over time](https://starchart.cc/doctest/doctest.svg)](https://starchart.cc/doctest/doctest)
  +
  Logo
  ------------
  