moved balanced ntwk cascading functionality into network.cascade, and call this from Network.__pow__. added mhusers ascii art
moved balanced ntwk cascading functionality into network.cascade, and call this from Network.__pow__. added mhusers ascii art

Ttl/scikit-rf,jhillairet/scikit-rf,Ttl/scikit-rf,temmeand/scikit-rf,scikit-rf/scikit-rf,Ttl/scikit-rf,temmeand/scikit-rf,temmeand/scikit-rf,jhillairet/scikit-rf,jhillairet/scikit-rf,scikit-rf/scikit-rf,Ttl/scikit-rf