Fix bug in _proxyRequest in which the target port was disregarded
For OpenID 1.0/1.1, use local identifier as key only when claimed identifier differs and local is present. Fix POST data decode carriage return stripping (if present). Validate association handles from OpenID providers to give more sensible errors when providers lack association support.
Added accept header to OpenID requests. Fixes #82.
fixes #75 by not stripping query string
Update README.md example to show error message instead of error object if authentication fails.
Restrict filling exchange attributes to signed parameters. Bug#920301
Merge branch 'v0.4.2-proxy-926-hotfix' into v0.4.2-proxy