docs: link to blog post about version 0.7

Author: indygreg

docs/history.rst

@@ -9,6 +9,7 @@ Work on PyOxidizer started in November 2018 by Gregory Szorc.
 Blog Posts
 ==========
 
+* `PyOxidizer 0.7 <https://gregoryszorc.com/blog/2020/04/09/pyoxidizer-0.7/>`_ (2020-04-09)
 * `C Extension Support in PyOxidizer <https://gregoryszorc.com/blog/2019/06/30/c-extension-support-in-pyoxidizer/>`_ (2019-06-30)
 * `Building Standalone Python Applications with PyOxidizer <https://gregoryszorc.com/blog/2019/06/24/building-standalone-python-applications-with-pyoxidizer>`_ (2019-06-24)
 * `PyOxidizer Support for Windows <https://gregoryszorc.com/blog/2019/01/06/pyoxidizer-support-for-windows>`_ (2019-01-06)