Add to changes.

Author: tobiasraabe

docs/changes.rst

@@ -34,6 +34,7 @@ all releases are available on `PyPI <https://pypi.org/project/pytask>`_ and
   inside test functions using pytask.
 - :gh:`109` makes pytask require networkx>=2.4 since previous versions fail with Python
   3.9.
+- :gh:`110` adds a "New Features" section to the ``README.rst``.
 
 
 0.0.14 - 2021-03-23