Annotation element can have an `author` property

[isaackd]

<annotation author="Bozu89" id="annotation_181606" itct="CAQQs-UBGP___________wEiEwiUiu2Om93fAhWD3pwKHSJJDe4o-B0yAml2SOW1sM-DjZH1qQE" log_data="a-type=2&amp;a-v=qepEaDnsGuU&amp;xble=1&amp;ei=wxQ0XNScO4O98wSikrXwDg&amp;a-id=annotation_181606" style="speech" type="text"><TEXT>DING!!!</TEXT>
    <segment>
        <movingRegion type="anchored">
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            <anchoredRegion h="8.88899993896" sx="7.91699981689" sy="60.5559997559" t="0:01:52.20" w="42.9169998169" x="0.833000004292" y="41.6669998169" />
        </movingRegion>
    </segment>
</annotation>