Version 1.3 release.

Updates CHANGELOG, version, docs.
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+
+<h1><a href="webmasters_v3.html">Webmaster Tools API</a> . <a href="webmasters_v3.sitemaps.html">sitemaps</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#delete">delete(siteUrl, feedpath)</a></code></p>
+<p class="firstline">Deletes a sitemap from this site.</p>
+<p class="toc_element">
+  <code><a href="#get">get(siteUrl, feedpath)</a></code></p>
+<p class="firstline">Retrieves information about a specific sitemap.</p>
+<p class="toc_element">
+  <code><a href="#list">list(siteUrl, sitemapIndex=None)</a></code></p>
+<p class="firstline">Lists sitemaps uploaded to the site.</p>
+<p class="toc_element">
+  <code><a href="#submit">submit(siteUrl, feedpath)</a></code></p>
+<p class="firstline">Submits a sitemap for a site.</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="delete">delete(siteUrl, feedpath)</code>
+  <pre>Deletes a sitemap from this site.
+
+Args:
+  siteUrl: string, The site's URL, including protocol, for example 'http://www.example.com/' (required)
+  feedpath: string, The URL of the actual sitemap (for example http://www.example.com/sitemap.xml). (required)
+</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="get">get(siteUrl, feedpath)</code>
+  <pre>Retrieves information about a specific sitemap.
+
+Args:
+  siteUrl: string, The site's URL, including protocol, for example 'http://www.example.com/' (required)
+  feedpath: string, The URL of the actual sitemap (for example http://www.example.com/sitemap.xml). (required)
+
+Returns:
+  An object of the form:
+
+    {
+    "errors": "A String", # Number of errors in the sitemap - issues with the sitemap itself, that needs to be fixed before it can be processed correctly.
+    "warnings": "A String", # Number of warnings for the sitemap - issues with URLs in the sitemaps.
+    "isPending": True or False, # If true, the sitemap has not been processed.
+    "lastSubmitted": "A String", # Date & time in which this sitemap was submitted. Date format is in RFC 3339 format (yyyy-mm-dd).
+    "isSitemapsIndex": True or False, # If true, the sitemap is a collection of sitemaps.
+    "lastDownloaded": "A String", # Date & time in which this sitemap was last downloaded. Date format is in RFC 3339 format (yyyy-mm-dd).
+    "path": "A String", # The url of the sitemap.
+    "type": "A String", # The type of the sitemap (for example "sitemap").
+    "contents": [ # The various content types in the sitemap.
+      { # Information about the various content types in the sitemap.
+        "indexed": "A String", # The number of URLs from the sitemap that were indexed (of the content type).
+        "type": "A String", # The specific type of content in this sitemap (for example "web", "images").
+        "submitted": "A String", # The number of URLs in the sitemap (of the content type).
+      },
+    ],
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="list">list(siteUrl, sitemapIndex=None)</code>
+  <pre>Lists sitemaps uploaded to the site.
+
+Args:
+  siteUrl: string, The site's URL, including protocol, for example 'http://www.example.com/' (required)
+  sitemapIndex: string, A URL of a site's sitemap index.
+
+Returns:
+  An object of the form:
+
+    { # List of sitemaps.
+    "sitemap": [ # Information about a sitemap entry.
+      {
+        "errors": "A String", # Number of errors in the sitemap - issues with the sitemap itself, that needs to be fixed before it can be processed correctly.
+        "warnings": "A String", # Number of warnings for the sitemap - issues with URLs in the sitemaps.
+        "isPending": True or False, # If true, the sitemap has not been processed.
+        "lastSubmitted": "A String", # Date & time in which this sitemap was submitted. Date format is in RFC 3339 format (yyyy-mm-dd).
+        "isSitemapsIndex": True or False, # If true, the sitemap is a collection of sitemaps.
+        "lastDownloaded": "A String", # Date & time in which this sitemap was last downloaded. Date format is in RFC 3339 format (yyyy-mm-dd).
+        "path": "A String", # The url of the sitemap.
+        "type": "A String", # The type of the sitemap (for example "sitemap").
+        "contents": [ # The various content types in the sitemap.
+          { # Information about the various content types in the sitemap.
+            "indexed": "A String", # The number of URLs from the sitemap that were indexed (of the content type).
+            "type": "A String", # The specific type of content in this sitemap (for example "web", "images").
+            "submitted": "A String", # The number of URLs in the sitemap (of the content type).
+          },
+        ],
+      },
+    ],
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="submit">submit(siteUrl, feedpath)</code>
+  <pre>Submits a sitemap for a site.
+
+Args:
+  siteUrl: string, The site's URL, including protocol, for example 'http://www.example.com/' (required)
+  feedpath: string, The URL of the sitemap to add. (required)
+</pre>
+</div>
+
+</body></html>
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