📝 Add links to more users to README

Author: webknjaz

README.md

@@ -15,7 +15,8 @@ current working directory.
 
 ## Any users?
 
-At the moment, it is used by the [@CherryPy] upstream, more to come.
+At the moment, it is used by [@aio-libs], [@CherryPy], [pip-api],
+[some Ansible projects], with more to come.
 
 
 ## License
@@ -25,4 +26,8 @@ The contents of this project is released under the
 
 
 [BSD 3-clause license]: LICENSE
+[@aio-libs]: https://github.com/aio-libs
 [@CherryPy]: https://github.com/cherrypy
+[pip-api]: https://github.com/di/pip-api
+[some Ansible projects]:
+https://github.com/search?q=org%3Aansible+%22uses%3A+re-actors%2Fcheckout-python-sdist%22+path%3A.github%2Fworkflows%2F&type=code