A lot more gs3 sponsors to list today

Author: jodygarnett

_includes/gs3-sponsors.html

@@ -72,6 +72,11 @@
        title="JDev"
        style="display:inline; margin-left:5px; margin-right:5px; min-width: 80px; max-width: 150px; max-height: 80px;"/> 
 </a>
+<a href="https://mammothgeospatial.com">
+  <img src="/sponsor/img/mammoth-logo.svg"
+       title="Mammoth Geospatial"
+       style="display:inline; margin-left:5px; margin-right:5px; min-width: 80px; max-width: 150px; max-height: 80px;"/> 
+</a>
 <a href="https://oceanservice.noaa.gov/">
   <img src="/sponsor/img/nos-logo.png"
        title="NOA National Ocean Service"
@@ -128,5 +133,5 @@
        style="display:inline; margin-left:5px; margin-right:5px; min-width: 80px; max-width: 150px; max-height: 80px;"/> 
 </a>
 <p>
-  Individual donations: Abhijit Gujar, Stefan Overkamp.
+  Individual donations: Abhijit Gujar, Hennessy Becerra, Ivana Ivanova, John Bryant, Jason Horning, Peter Smythe, Sajjadul Islam, Sebastiano Meier, Stefan Overkamp.
 </p>