create new 'what's new', update zenodo

Author: Cameron Stark

README.md

@@ -61,8 +61,8 @@
 <tr>
   <td>Publications</td>
   <td>
-    <a href="https://doi.org/10.5281/zenodo.2554311">
-    <img src="https://zenodo.org/badge/DOI/10.5281/zenodo.2554311.svg" alt="zenodo reference" />
+    <a href="https://doi.org/10.5281/zenodo.3762635">
+    <img src="https://zenodo.org/badge/DOI/10.5281/zenodo.3762635.svg" alt="zenodo reference">
     </a>
     <a href="http://joss.theoj.org/papers/41187535cad22dd4b076c89b72f874b1">
     <img src="http://joss.theoj.org/papers/41187535cad22dd4b076c89b72f874b1/status.svg" alt="JOSS reference" />

docs/sphinx/source/whatsnew.rst

@@ -6,6 +6,7 @@ What's New
 
 These are new features and improvements of note in each release.
 
+.. include:: whatsnew/v0.7.3.rst
 .. include:: whatsnew/v0.7.2.rst
 .. include:: whatsnew/v0.7.1.rst
 .. include:: whatsnew/v0.7.0.rst

docs/sphinx/source/whatsnew/0.7.3.rst

@@ -0,0 +1,25 @@
+.. _whatsnew_0730:
+
+v0.7.3 (Month day, year)
+-------------------------
+
+API Changes
+~~~~~~~~~~~
+
+Enhancements
+~~~~~~~~~~~~
+
+Bug fixes
+~~~~~~~~~
+
+Testing
+~~~~~~~
+
+Documentation
+~~~~~~~~~~~~~
+
+Requirements
+~~~~~~~~~~~~
+
+Contributors
+~~~~~~~~~~~~