The Benders notebook has errors

[mlubin]

https://nbviewer.jupyter.org/github/JuliaOpt/JuMPTutorials.jl/blob/master/notebook/optimization_concepts/benders_decomposition.ipynb

┌ Info: Precompiling JuMP [4076af6c-e467-56ae-b986-b466b2749572]
└ @ Base loading.jl:1192
ERROR: LoadError: ArgumentError: Package MutableArithmetics [d8a4904e-b15c-11e9-3269-09a3773c0cb0] is required but does not seem to be installed:
 - Run `Pkg.instantiate()` to install all recorded dependencies.

Stacktrace:
 [1] _require(::Base.PkgId) at ./loading.jl:929
 [2] require(::Base.PkgId) at ./loading.jl:858
 [3] require(::Module, ::Symbol) at ./loading.jl:853
 [4] include at ./boot.jl:317 [inlined]
 [5] include_relative(::Module, ::String) at ./loading.jl:1044
 [6] include(::Module, ::String) at ./sysimg.jl:29
 [7] top-level scope at none:2
 [8] eval at ./boot.jl:319 [inlined]
 [9] eval(::Expr) at ./client.jl:393
 [10] top-level scope at ./none:3
in expression starting at /home/mbesancon/.julia/packages/JuMP/CZ8vV/src/JuMP.jl:16

[matbesancon]

Fixed in last commit thanks. Another motivation for not having notebooks in the repo

[mlubin]

Yeah this shouldn't require manual checking. Thanks for the fix.