Update changelog.

Author: ikirudennis

CHANGELOG.textile

@@ -1,5 +1,11 @@
 h1. Textile Changelog
 
+h2. Version 4.0.1
+* Bugfixes:
+** SyntaxWarnings with Python 3.8 i("#71":https://github.com/textile/python-textile/issues/71)
+** testsuite: internal error with coverage 5.0.X ("#72":https://github.com/textile/python-textile/issues/72)
+** DeprecationWarnings about invalid escape sequences ("#73":https://github.com/textile/python-textile/issues/73)
+
 h2. Version 4.0.0
 * Drop support for Python 2, hence the version bump. Update list of PY3K versions to currently-supported versions. If you need to use textile on Python 2.7 or Python 3.3 or 3.4, please use textile Version 3.0.4.
 * For use in PyPy environments, textile used to work well with the regex package. Lately, it's running into trouble. Please uninstall regex if this is the case for you.