Version bump and notes for release

Author: ejolly

docs/new.rst

@@ -2,6 +2,12 @@ What's New
 ==========
 Historically :code:`pymer4` versioning was a bit all over the place but has settled down since 0.5.0. This page includes the most notable updates between versions but github is the best place to checkout more details and `releases <https://github.com/ejolly/pymer4/releases/>`_.
 
+0.7.8
+-----
+- Maintenance release that pins :code:`rpy2 >= 3.4.5,< 3.5.1` due to R -> Python dataframe conversion issue on recent :code:`rpy2` versions that causes a `recursion error <https://github.com/rpy2/rpy2/issues/866>`_. 
+- Pending code changes to support :code:`rpy2 >= 3.5.1` are tracked on `this development branch <https://github.com/ejolly/pymer4/tree/dev_rpy2_3.5.1>`_. **Upcoming releases will drop support for** :code:`rpy2 < 3.5.X`
+- Clearer error message when making circular predictions using :code:`Lmer` models
+
 0.7.7
 -----
 - This version is identical to 0.7.6 but supports :code:`R >= 4.1`

pymer4/version.py

@@ -1,4 +1,4 @@
 """Specifies current version of pymer4 to be used by setup.py and __init__.py
 """
 
-__version__ = "0.7.8.dev0"
+__version__ = "0.7.8"