Options don't work #31

Hi Manuel,
A couple of options, num-threads, num-tries, max-expression-depthand and num-queries don't work right now. I've tried both --num_threads and --num-threads, but get the same exception in both cases:

Exception in thread "main" com.beust.jcommander.ParameterException: Was passed main parameter '--num-threads' but no main parameter was defined in your arg class at com.beust.jcommander.JCommander.initMainParameterValue(JCommander.java:954) at com.beust.jcommander.JCommander.parseValues(JCommander.java:755) at com.beust.jcommander.JCommander.parse(JCommander.java:356) at com.beust.jcommander.JCommander.parseValues(JCommander.java:796) at com.beust.jcommander.JCommander.parse(JCommander.java:356) at com.beust.jcommander.JCommander.parse(JCommander.java:335) at sqlancer.Main.executeMain(Main.java:296) at sqlancer.Main.main(Main.java:273)