* test with a large amount of data.
 
 * in general, test test test.

 * implement adding/removing/otherwise syncing the SVN working copy. This
   probably at a minimum involves running 'svn status' on the target/ directory,
   parsing the output, and dealing with it as appropriate. Eg
   
   if SHOULDMODIFYSVNWC:
       for line in "output from svn status":
           if line.startswith("?"):
                file = dosomeparsing(line)
                call(svn add file)

   This should be a seperate command.