changed aux.jl to auxiliary.jl for windows compatibility since aux is a reserved file name.
Added a try catch block on test_cg.jl to check if sympy is installed.
Looks good, thanks for doing this! Note that the Travis tests failed, but this is because I haven't updated the test file in a long time. Will merge now.
changed aux.jl to auxiliary.jl for windows compatibility since aux is a reserved file name. Added a try catch block on test_cg.jl to check if sympy is installed.