improved complex-num handling
improved complex-num handling

pycket/pycket,magnusmorton/pycket,cderici/pycket,cderici/pycket,pycket/pycket,cderici/pycket,magnusmorton/pycket,magnusmorton/pycket,pycket/pycket,samth/pycket,samth/pycket,samth/pycket