add mvn invocation to test against released version
add mvn invocation to test against released version

mojavelinux/asciidoctorj,mojavelinux/asciidoctorj,abelsromero/asciidoctorj,solent/asciidoctorj,lefou/asciidoctorj,ancho/asciidoctorj,lefou/asciidoctorj,danielgrycman/asciidoctorj,lefou/asciidoctorj,danielgrycman/asciidoctorj,ancho/asciidoctorj,abelsromero/asciidoctorj,solent/asciidoctorj,asciidoctor/asciidoctorj,mojavelinux/asciidoctorj,lefou/asciidoctorj,robertpanzer/asciidoctorj,asciidoctor/asciidoctorj,robertpanzer/asciidoctorj,ysb33r/asciidoctorj,ancho/asciidoctorj,asciidoctor/asciidoctorj,abelsromero/asciidoctorj,ysb33r/asciidoctorj,danielgrycman/asciidoctorj,solent/asciidoctorj,ysb33r/asciidoctorj,robertpanzer/asciidoctorj,danielgrycman/asciidoctorj,solent/asciidoctorj,ysb33r/asciidoctorj