Log Message:
Zeal supports the docset format used by Dash. You can download
official Dash docsets within Zeal.

This version uses QtWebkit to render HTML pages.

Created from post from mikeandmore@gmail.com on teck-pkg
http://mail-index.netbsd.org/tech-pkg/2020/07/22/msg023585.html
with a few changes to appease pkglint.