Fix: add czi funding and 501c3 language

Author: lwasser

_includes/footer.html

@@ -23,8 +23,8 @@
   </div>
 
   <div class="page__footer-copyright">
-    <p>pyOpenSci is a fiscally sponsored project of <a href="https://communityinitiatives.org/" target="_blank">Community Initiatives</a> and
-      is funded by the <a href="https://sloan.org/" target="_blank">Sloan Foundation.</a>
+    <p>pyOpenSci is a fiscally sponsored project of <a href="https://communityinitiatives.org/" target="_blank">Community Initiatives</a>, a registered 501(c)3 non-profit organization based in California, USA.
+      pyOpenSci is grateful for support from the <a href="https://sloan.org/" target="_blank">Sloan Foundation.</a> and the <a href="https://chanzuckerberg.com/" target="_blank">Chan Zuckerberg Initiative</a>.
     </p>
 
     &copy; {{ site.time | date: '%Y' }} {{ site.name | default: site.title }}</div>