default glpk set objective sense during create
default glpk set objective sense during create

Now, by default, glpk will set the objective sense during
create_problem, and will not overwrite that setting by default during
solving (though a new value can still be passed in)

JuBra/cobrapy,jerkos/cobrapy,jeicher/cobrapy,JuBra/cobrapy,zakandrewking/cobrapy,zakandrewking/cobrapy,jerkos/cobrapy,jeicher/cobrapy,aebrahim/cobrapy,aebrahim/cobrapy