Version 0.2.2 of shadowspawn is out. Go download it!
This version fixes issue #14, where shadowspawn wasn't correctly handling options that started with a dash. The biggest problem with that, of course, is that it stopped people from using shadowspawn together with rsync, which is a pretty killer combination. I use that setup myself, and it means I can do things like have dozens of full copies of my hard drive, but files that are the same from one backup to the other don't take up any additional space. Nice.