[maven-release-plugin] prepare release r4.13-rc-1
[maven-release-plugin] prepare release r4.13-rc-1

stefanbirkner/junit,kcooney/junit,junit-team/junit,kcooney/junit,junit-team/junit,junit-team/junit4,junit-team/junit4,stefanbirkner/junit,junit-team/junit,stefanbirkner/junit,kcooney/junit,junit-team/junit4