[new_pymtl] create dev and perf impl of cycle()
[new_pymtl] create dev and perf impl of cycle()

cornell-brg/pymtl,12yujim/pymtl,Glyfina-Fernando/pymtl,tj93/pymtl,12yujim/pymtl,12yujim/pymtl,cornell-brg/pymtl,jjffryan/pymtl,jjffryan/pymtl,tj93/pymtl,cfelton/pymtl,tj93/pymtl,jjffryan/pymtl,Glyfina-Fernando/pymtl,cfelton/pymtl,Glyfina-Fernando/pymtl,jck/pymtl,jck/pymtl,cfelton/pymtl,jck/pymtl,cornell-brg/pymtl