Release v1.4.1

This is a bugfix release which makes SAML Raider working again in the latest Java version.

Bugfixes:

• Broken "Sign Assertion" / "Sign Message" feature in latest Java version (issue: #60 and #42, fix: ae47ed2)
• Broken "Send certificates to SAML Raider Certificates" in latest Java version (mentioned in issue #42, fix: 1b117f0)
• Problems with newlines in URL encoded messages (PR: #57)

Thanks @edmacke for testing the new version and @antoinet for your PR.

In addition, some libraries were updated to the latest version:

• bcprov-jdk15on from 1.52 to 1.67: (PR: #55)
• xmlsec from 2.1.4 to 2.1.7 (PR: #56)
• xercesImpl from 2.12.0 to 2.12.2 (PR: #58)