1.3.9
Implement RSA-PKCS1.5 key transport for xmlsec-gcrypt and xmlsec-gnutls (#476)
update readme files
Remove error message from pwd callback (#970)
Update copyright (#817)
(xmlsec-core) Deprecate get key data identifier method (#967)
Cleanup todos and not implemented errors (#966)
(xmlsec-core) Rename ATTRIBUTE_UNUSED to XMLSEC_ATTRIBUTE_UNUSED and fix includes (#906)