Added preliminary release notes for 0.4.2.

docs/source/releasenotes/index.rst

@@ -10,5 +10,6 @@ bugs fixed, and known issues for each successive release.
 .. toctree::
     :maxdepth: 1
 
+    notes_0.4.2
     notes_0.4.1
     notes_0.4.0

docs/source/releasenotes/notes_0.4.2.rst

@@ -0,0 +1,37 @@
+.. _notes_0.4.2:
+
+==============================
+Release Notes for OpenMC 0.4.2
+==============================
+
+.. note::
+   These release notes are for an upcoming release of OpenMC and are still
+   subject to change.
+
+-------------------
+System Requirements
+-------------------
+
+There are no special requirements for running the OpenMC code. As of this
+release, OpenMC has been tested on a variety of Linux distributions as well as
+Mac OS X. However, it has not been tested yet on any versions of Microsoft
+Windows. Memory requirements will vary depending on the size of the problem at
+hand (mostly on the number of nuclides in the problem).
+
+------------
+New Features
+------------
+
+- Ability to specify 'point' source type.
+- Ability to change random number seed.
+- User's can now specify units='sum' on a <density> tag. This tells the code
+  that the total material density is the sum of the atom fractions listed for
+  each nuclide on the material.
+
+---------
+Bug Fixes
+---------
+
+- `2a5b9c`_: Fixed regression in plotting.
+
+.. _2a5b9c: https://github.com/mit-crpg/openmc/commit/2a5b9c