Provides support for the Groovy Shell (aka. groovysh). Applications that embed the shell should use {@link org.apache.groovy.groovysh.Main#start(org.apache.groovy.groovysh.GroovyshOptions, String[])} together with {@link org.apache.groovy.groovysh.GroovyshOptions} and {@link org.apache.groovy.groovysh.jline.GroovyEngine}.