Hello,
the GitHub releases of this project are outdated; the latest entry is for version 2.15.0, but the latest version is currently 2.19.0.

Is this intentional? Is there some other changelog / release notes document I overlooked?

As mentioned in previous similar issues a changelog makes it easier for users to understand what changed between the versions; checking the commits can be tedious especially if commits might have no user facing effect, or if commits messages are unclear to users.

It looks like previously creation of the GitHub releases was automated (see #541 and #710), but that was dropped by #791.