>From this issue https://github.com/JuliaPy/PyPlot.jl/issues/157 I understand
`Factor[:FactorMargin](A, Remove_var, Remain_var, Remove_dims,
Remain_dims)` (line 85 of FactorOperations.jl) should pass, as it does on
Atom, but not on the REPL, which throws
Got an exception of type ErrorException outside of a @test
type DataType has no field FactorMargin
in FactorDropMargin(::BN.Factor, ::Array{String,1}) at
/Users/Corvus/.julia/v0.5/BN/src/FactorOperations.jl:85
Help, please.
