epub 3.2 link

README.md

@@ -64,6 +64,7 @@ you can insert raw html using the corresponding `.gmo` syntax: the contents of a
 # references
 
 * [EPUB - Wikipedia](https://en.wikipedia.org/wiki/EPUB#Implementation)
+* [EPUB 3.2](https://www.w3.org/publishing/epub3/)
 * [Gempub](https://codeberg.org/oppenlab/gempub)
 
 # license

templates/content-header.opf

@@ -8,6 +8,7 @@
     <dc:creator id="creator">{author}</dc:creator>
     <dc:description>{description}</dc:description>
     <dc:date>{publishDate}</dc:date>
+    <dc:contributor id="translator">{translator}</dc:contributor>
     <meta property="dcterms:modified">{date}</meta>
     <meta content="{cover}" name="cover"/>
   </metadata>