You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="Ron Hill" rcid="1118" pageid="39" revid="1053" old_revid="905" timestamp="2018-11-28T17:27:16Z" />
      <rc type="edit" ns="0" title="Roger Vandendriessche" rcid="1117" pageid="238" revid="1052" old_revid="1051" timestamp="2018-09-25T13:00:35Z" />
      <rc type="edit" ns="0" title="Roger Vandendriessche" rcid="1116" pageid="238" revid="1051" old_revid="1050" timestamp="2018-09-25T12:58:13Z" />
      <rc type="edit" ns="0" title="Roger Vandendriessche" rcid="1115" pageid="238" revid="1050" old_revid="1022" timestamp="2018-09-25T12:56:54Z" />
      <rc type="log" ns="0" title="Octave Vandendriessche" rcid="1114" pageid="0" revid="0" old_revid="0" timestamp="2018-07-15T16:27:52Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="1113" pageid="1" revid="1048" old_revid="927" timestamp="2018-07-15T16:26:11Z" />
      <rc type="edit" ns="0" title="Rose Budai" rcid="1112" pageid="188" revid="1047" old_revid="760" timestamp="2018-07-15T16:24:06Z" />
      <rc type="log" ns="6" title="File:Ramona.jpg" rcid="1111" pageid="0" revid="0" old_revid="0" timestamp="2018-07-15T16:21:07Z" />
      <rc type="edit" ns="10" title="Template:Vandendriessche family tree" rcid="1110" pageid="126" revid="1045" old_revid="914" timestamp="2018-07-15T16:18:55Z" />
      <rc type="new" ns="0" title="Delores Susan Powers" rcid="1109" pageid="281" revid="1044" old_revid="0" timestamp="2018-07-03T21:58:34Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2018-07-03T21:44:20Z" />
  </query-continue>
</api>