InResponseTo in response can be empty, then don't validate the request state
Merge pull request #20 from AlbertBrand/master

Don't validate the request state when InResponseTo is empty
Support KeyDescriptor without 'use' attribute #13
unit test autoloading
Support for EntitiesDescriptor element #12
Authenticate fixed only to redirect binding and config settings ignored #23
Merge remote-tracking branch 'upstream/master' into dynamic-services