Boilerplate converting

[Intelligent2013]

Source: https://github.com/metanorma/mn-samples-bsi/issues/2

Source MN XML data:

<docidentifier type="ISBN">978 0 539 03116 4</docidentifier>

<ics>
	<code>03.100.70</code>
</ics>
<ics>
	<code>01.120</code>
</ics>

<boilerplate>
	<copyright-statement>
		<clause>
			<title depth="1">Publishing and copyright information</title>
			<p id="_110d3205-7a0d-4007-b8ed-ff9d9c6ff002">The BSI copyright notice displayed in this document indicates when the document was last issued.</p>
			<p id="boilerplate-year"> &#169; BSI 2020</p>
			<p id="_d803cd19-200d-45ba-b3d1-21eaad9cab48">Published by BSI Standards Limited 2020</p>
		</clause>
	</copyright-statement>

<preface>
...
<clause id="_amendmentscorrigenda_issued_since_publication" type="corrigenda" inline-header="false" obligation="informative">
	<title depth="1">Amendments/corrigenda issued since publication</title>
	<table id="tab_ace_nat" unnumbered="true">
		<colgroup>
			<col width="50%"/>
			<col width="50%"/>
		</colgroup>
		<thead>
			<tr>
				<th valign="top" align="left">Date</th>
				<th valign="top" align="left">Text affected</th>
			</tr>
		</thead>
	</table>
</clause>
</preface>

Should be converted to STS XML data:

<front>
...
</nat-meta>
<sec id="sec_pub_info_nat" sec-type="publication_info">
	<title>Publishing and copyright information</title>
	<p>The BSI copyright notice displayed in this document indicates when the document was last issued.</p>
	<p>© The British Standards Institution 2020</p>
	<p>Published by BSI Standards Limited 2020</p>
	<p>ISBN 978 0 539 03116 4</p>
	<p>ICS 01.120; 03.100.70</p>
	<list id="BSI_ref" list-type="simple">
		<list-item>
			<p>The following BSI references relate to the work on this document:</p>
			<p>Committee reference DEF/1</p>
			<p>Draft for comment 20/30387670 DC</p>
		</list-item>
	</list>
	<table-wrap id="tab_ace_nat" content-type="ace-table">
		<caption>
			<title>Amendments/corrigenda issued since publication</title>
		</caption>
		<table style="border-collapse:collapse;">
			<colgroup>
				<col width="30%"/>
				<col width="70%"/>
			</colgroup>
			<thead>
				<tr>
					<th align="left" valign="top" style="border-bottom: solid 2px">Date</th>
					<th align="left" valign="top" style="border-bottom: solid 2px">Text affected</th>
				</tr>
			</thead>
			<tbody>
				<tr>
					<td align="left" valign="top"/>
					<td align="left" valign="top"/>
				</tr>
			</tbody>
		</table>
	</table-wrap>
</sec>

[Intelligent2013]

Done.