This is a maintenance release for Unpoly 1. Expect little to no additional changes for this legacy version. New features will only be added to Unpoly 2.
up.request() will now send Unpoly's version number as an
X-Up-Version request header. Since
X-Up-Target is optional in Unpoly 2, server-side integration libraries can look for
X-Up-Version to reliably detect a fragment update for both Unpoly 1 and 2.
up.log.config.banner = false is set. (fix by @adam12)