Passed parameter dictionary is modified

[sstroemer]

As pointed out by @daschw the following occurs:

using IESopt: IESopt, Assets

cfg = String(Assets.get_path("examples", "25_global_parameters.iesopt.yaml"));
parameters = Dict("demand" => 10);
model = IESopt.generate!(cfg; parameters);

parameters # Dict{String, Int64}()

deleting the contents of parameters.

This is due the wrongful handling of "global parameters" in _parse_model! (and subsequently in _parse_global_specification!). Further the existing model.ext[:_iesopt_kwargs][:parameters] is not being used (which it should be).