Version 1.3 release.

Updates CHANGELOG, version, docs.
diff --git a/docs/dyn/genomics_v1beta.html b/docs/dyn/genomics_v1beta.html
index dd5308e..3832845 100644
--- a/docs/dyn/genomics_v1beta.html
+++ b/docs/dyn/genomics_v1beta.html
@@ -114,4 +114,9 @@
 </p>
 <p class="firstline">Returns the variants Resource.</p>
 
+<p class="toc_element">
+  <code><a href="genomics_v1beta.variantsets.html">variantsets()</a></code>
+</p>
+<p class="firstline">Returns the variantsets Resource.</p>
+
 </body></html>
\ No newline at end of file