[julia-users] Could not import Base.add into Winston

[Xiaowei Zhang]

OS X 10.8.5 + Fresh installation of Julia 0.3rc1

after installing Winston and import it, the warning "Could not import 
Base.add! into DataStructures" pops up and the `add` function in Winston 
cannot be used in the following example

 x = linspace(0, 3pi, 100)
 c = cos(x)
 s = sin(x)

 p = FramedPlot(
         title="title!",
         xlabel="\\Sigma x^2_i",
         ylabel="\\Theta_i")

 add(p, FillBetween(x, c, x, s))