Merge pull request #34 from pganssle/release_0.2.0

Prepare changelog for release 0.2.0

Author: pganssle

NEWS.rst

@@ -0,0 +1,18 @@
+Version 0.2.0 (2018-05-03)
+==========================
+
+Features
+--------
+
+- Added the ``variants.inspect`` module, which provides a public API for
+  inspecting variant function groups. It currently provides two functions:
+  ``is_primary`` and ``is_primary_method``. (GH #29)
+
+
+Improved Documentation
+----------------------
+
+- Updated permanent redirect links in documentation. (GH #28)
+- Flattened TOC entry for changelog in documentation. (GH #32)
+- Added section for API documentation, including documentation for the inspect
+  submodule. (GH #33)