Release 2.0.0

Release dnssecjava-1.2.0

[maven-release-plugin] copy for tag dnssecjava-1.1.3

[maven-release-plugin] copy for tag dnssecjava-1.1.2

[maven-release-plugin] copy for tag dnssecjava-1.1.1

[maven-release-plugin] copy for tag dnssecjava-1.1

[maven-release-plugin] copy for tag dnssecjava-1.0