Validate InResponseTo and require SubjectConfirmationData in SAML ass…

…ertion subject confirmations

Merge pull request #35 from activecollab/remove-param-optionality

Make InResponseTo validation required by default

Merge pull request #34 from activecollab/in-response

Validate InResponseTo

Improve verification

Merge pull request #33 from activecollab/allow-sha1-signing

Add SHA-1 as possible signing algo

Merge pull request #32 from activecollab/validate-saml-response

Validate SAML response

Merge pull request #31 from activecollab/upgrade-hashing

Upgrade the SAML AuthnRequest signature algorithm to RSA-SHA256

Test whether intent is issued only when both required and supported

Rename create intent method, and make it accept additional arguments

Merge pull request #27 from rajkonen/improve/google-auth

Add to use email from payload