Preserve plugin load order with OrderedSet
#60
Merged
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As mentioned in #57, the Wizard would benefit from plugins always loading in the same order. Without this, the order of category plugins located in the same file tended to be random. For example, the choices of CV types (Distance, Angle, Dihedral, etc) were not consistent between different runs of the wizard. This also seemed to be the case with command plugins: the order they were listed in
--helpwas not retained.Here I replace the
setused previously with a custom-writtenOrderedSetclass. This seems to have fixed these consistency issues.