Fixed launch delegate, ProcessProxy was invoking plugins as well. It still does in case of destroy. This means LaunchPlugin#cleanUp needs to be thread-safe and guard against multiple invocations
passing vmargs to launch plugins, seems to interfer with other flags though?
closes #24, also fixes Manifest.fm
added proper debug launching
reverted changes to MANIFEST.MF...
fixed issues when debug plugin isn't available
fixed merge conflicts