This page lists the known REST versions and their changes they introduced.
This was the initial and first supported version of the REST interface.
This version added files to allow spidering channels without requiring the server to have directory listings enabled. These files are:
Now the developer's roles are listed in the package's maintainer list.
This version makes it possible to resolve PHP version incompatibilities by downloading the releases list only. allreleases2.xml lists the minimum PHP version for each package release, thus the package name does not need to be changed when upgrading the package's minimun PHP version.