libopkele

Attribute exchange and oauth openid extensions were added. The legacy compatibility layer was removed along with the pcre dependency.

This release fixes normalization of Uris with a single-character
trailing component and adds build improvements.

A workaround was made for non-compliant OPs in RP. Discovery robustness improvements were made. Various build fixes and enhancements were made.

Minor bugfixes and portability improvements were
made.

This release introduces OpenID 2.0 support, XRDS discovery, much more robust HTML discovery, and example provider and relying party implementations. It also changes the API and, although the old code is still there for compatibility, its use is strongly discouraged and the code using the old API will not benefit from most of the improvements.