Update release notes for 1.3.1.
+Pyglet 1.3.1
+============
+Bugfix release.
+
+Bugfixes
+--------
+- #158 Fix mouse events in mouse exclusive mode on Windows.
+- #105 Crashes in PulseAudio;
+- #163 Workaround for running inside Spyder;
+- #45 Expose viewport size for use on HiDPI screens;
+- #15 Respect keyboard layout on macOS;
+
Pyglet 1.3.0
============
This major release takes Python 3 support to the next level. The entire codebase is now compatible
