Add collection metadata

src/epub/content.opf

@@ -47,6 +47,9 @@
 		<meta property="authority" refines="#subject-3">LCSH</meta>
 		<meta property="term" refines="#subject-3">sh2008111482</meta>
 		<meta property="se:subject">Fiction</meta>
+		<meta id="collection-1" property="belongs-to-collection">The BBC’s 100 Greatest British Novels (2015)</meta>
+		<meta property="collection-type" refines="#collection-1">set</meta>
+		<meta property="group-position" refines="#collection-1">65</meta>
 		<dc:description id="description">A young Elizabethan poet for whom success is elusive becomes a woman and embraces the spirit of the age.</dc:description>
 		<meta id="long-description" property="se:long-description" refines="#description">
 			&lt;p&gt;Originally published in 1928, &lt;i&gt;Orlando&lt;/i&gt;, one of &lt;a href="https://standardebooks.org/ebooks/virginia-woolf"&gt;Virginia Woolf’s&lt;/a&gt; better-known novels, provides a splendid example of Modernist experimentation with genre and storytelling.&lt;/p&gt;