Library updates for Java 11

[testphreak]

Hi Martin, nice library! You've made it very easy to consume Java's cryptography APIs.

Do you have any plans to update your library to support the latest updates since Java 8, specifically the new security updates?

https://openjdk.java.net/projects/jdk9/
http://openjdk.java.net/projects/jdk/10/
http://openjdk.java.net/projects/jdk/11/

https://blog.gypsyengineer.com/en/security/whats-new-security-features-in-java-11.html

[martinwithaar]

Thanks for pointing these out. I will look into it this weekend!