Add tests for Supply.delay
Add tests for Supply.delay

We seem to have a problem with the ThreadPool scheduler case :-(

skids/roast,cygx/roast,skids/roast,b2gills/roast,bitrauser/roast,dankogai/roast,cygx/roast,zostay/roast,dankogai/roast,laben/roast,zostay/roast,zostay/roast,b2gills/roast,laben/roast,skids/roast,b2gills/roast,niner/roast,dogbert17/roast,niner/roast,dogbert17/roast,perl6/roast,niner/roast,laben/roast,dankogai/roast,cygx/roast,bitrauser/roast