Add release notes for version 4.2.1 documenting current changes.

Author: GrahamDumpleton

docs/release-notes/index.rst

@@ -5,6 +5,7 @@ Release Notes
 .. toctree::
    :maxdepth: 2
 
+   version-4.2.1.rst
    version-4.2.0.rst
 
    version-4.1.3.rst

docs/release-notes/version-4.2.1.rst

@@ -0,0 +1,22 @@
+=============
+Version 4.2.1
+=============
+
+Version 4.2.1 of mod_wsgi can be obtained from:
+
+  https://github.com/GrahamDumpleton/mod_wsgi/archive/4.2.1.tar.gz
+
+Known Issues
+------------
+
+1. The makefiles for building mod_wsgi on Windows are currently broken and
+need updating. As most new changes relate to mod_wsgi daemon mode, which is
+not supported under Windows, you should keep using the last available
+binary for version 3.X on Windows instead.
+
+Bugs Fixed
+----------
+
+1. The auto generated configuration would not work with an Apache
+installation where core Apache modules were statically compiled into Apache
+rather than being dynamically loaded.