Release v1.6.0 (#324)

* Update version and changelog for v1.6.0
* Update docs
diff --git a/docs/epy/googleapiclient.schema.Schemas-class.html b/docs/epy/googleapiclient.schema.Schemas-class.html
index 3708da5..025f7f2 100644
--- a/docs/epy/googleapiclient.schema.Schemas-class.html
+++ b/docs/epy/googleapiclient.schema.Schemas-class.html
@@ -59,11 +59,11 @@
 <h1 class="epydoc">Class Schemas</h1><p class="nomargin-top"><span class="codelink"><a href="googleapiclient.schema-pysrc.html#Schemas">source&nbsp;code</a></span></p>
 <center>
 <center>  <map id="uml_class_diagram_for_googleap_44" name="uml_class_diagram_for_googleap_44">
-<area shape="rect" id="node1_4" href="googleapiclient.schema.Schemas-class.html#__init__" title="Constructor." alt="" coords="17,39,216,59"/>
-<area shape="rect" id="node1_5" href="googleapiclient.schema.Schemas-class.html#prettyPrintByName" title="Get pretty printed object prototype from the schema name." alt="" coords="17,59,216,79"/>
-<area shape="rect" id="node1_6" href="googleapiclient.schema.Schemas-class.html#prettyPrintSchema" title="Get pretty printed object prototype of schema." alt="" coords="17,79,216,99"/>
-<area shape="rect" id="node1_7" href="googleapiclient.schema.Schemas-class.html#get" title="Get deserialized JSON schema from the schema name." alt="" coords="17,99,216,119"/>
-<area shape="rect" id="node1" href="googleapiclient.schema.Schemas-class.html" title="Schemas for an API." alt="" coords="5,5,227,125"/>
+<area shape="rect" id="node1_4" href="googleapiclient.schema.Schemas-class.html#__init__" title="Constructor." alt="" coords="18,36,217,55"/>
+<area shape="rect" id="node1_5" href="googleapiclient.schema.Schemas-class.html#prettyPrintByName" title="Get pretty printed object prototype from the schema name." alt="" coords="18,55,217,73"/>
+<area shape="rect" id="node1_6" href="googleapiclient.schema.Schemas-class.html#prettyPrintSchema" title="Get pretty printed object prototype of schema." alt="" coords="18,73,217,92"/>
+<area shape="rect" id="node1_7" href="googleapiclient.schema.Schemas-class.html#get" title="Get deserialized JSON schema from the schema name." alt="" coords="18,92,217,111"/>
+<area shape="rect" id="node1" href="googleapiclient.schema.Schemas-class.html" title="Schemas for an API." alt="" coords="5,5,228,117"/>
 </map>
   <img src="uml_class_diagram_for_googleap_44.gif" alt='' usemap="#uml_class_diagram_for_googleap_44" ismap="ismap" class="graph-without-title" />
 </center>
@@ -485,7 +485,7 @@
 <table border="0" cellpadding="0" cellspacing="0" width="100%%">
   <tr>
     <td align="left" class="footer">
-    Generated by Epydoc 3.0.1 on Tue Nov  1 17:02:50 2016
+    Generated by Epydoc 3.0.1 on Thu Jan  5 12:55:05 2017
     </td>
     <td align="right" class="footer">
       <a target="mainFrame" href="http://epydoc.sourceforge.net"