DM2 v1.1.0

This is a minor release that contains several new features, including archival exports for projects, stable links for documents, and a sitemap for search engine indexing, along with several bug fixes.

What's Changed

• Document permalinks by @blms in #530
• Archival exports (#511, #512, #513, #514) by @blms in #521
• Prevent and retroactively fix bug with prosemirror textStyle marks (#519) by @blms in #532
• Prevent unwanted autofocus on text editor (#524) by @blms in #533
• Generate a sitemap and robots.txt for search engine indexing by @blms in #534

Full Changelog: v1.0.9...v1.1.0