Add Michiel Beijen's Python feed (#620)

Author: mbeijen

config/config.ini

@@ -891,6 +891,9 @@ name = Michał Bultrowicz
 [http://www.artima.com/weblogs/feeds/bloggers/micheles.rss]
 name = Michele Simionato
 
+[https://tildeweb.nl/~michiel/tags/python/atom.xml]
+name = "Michiel's Blog"
+
 [http://www.firsttimeprogrammer.blogspot.com/feeds/posts/default/-/python?alt=rss]
 name = Michy Alice