This page exists to collect links to Wiki pages specific to each distribution. Those pages in turn include the distributed files as well as release-specific documentation.
2.1.x
The 2.1.x line introduced the CASReceipt in particular and the filter composition approach to extension in general.
2.0.x
The 2.0.x line introduced support for some of the functionality offered by the 2.0 version of the CAS protocol and of the server implementation.