Update changelog.

Author: ionelmc

AUTHORS.rst

@@ -3,4 +3,5 @@ Authors
 =======
 
 * Ionel Cristian Mărieș - https://blog.ionelmc.ro
-* Jonas Maurus - https://github.com/jdelic/
+* Jonas Maurus - https://github.com/jdelic
+* Felix Yan - https://github.com/felixonmars

CHANGELOG.rst

@@ -1,6 +1,12 @@
 Changelog
 =========
 
+1.5.2 (2020-11-15)
+------------------
+
+* Fixed broken import on Python 3.9.
+  Contributed by Felix Yan in `#19 <https://github.com/ionelmc/python-aspectlib/pull/19>`_.
+
 1.5.1 (2020-06-11)
 ------------------