I'm using PyPlot to make 3D plots, which I color by getting color maps
through ColorMap(::String). After running a Pkg.update() today, I am now
getting an error message when trying to construct a 3D plot, saying
"cm_get_cmap not defined (...) at Plots.jl:141".
Indeed, when checking colormaps.jl
<https://github.com/stevengj/PyPlot.jl/blob/master/src/colormaps.jl>, I
find that ColorMaps should lead to a call to get_cmap, not cm_get_cmap. Why
is my PyPlot trying to get the color maps through a different function?