Changelog:
- Fix vulnerability CVE-2017-11427. Process text of nodes properly, ignoring comments
- Improve how fingerprint is calcultated
- Fix issue with LogoutRequest rejected by ADFS due NameID with unspecified format instead no format attribute
- Fix signature position in the SP metadata
- #80 Preserve xmlns:xs namespace when signing and serializing responses
- Redefine NSMAP constant
- Updated Django demo (Django 1.11).