Allow Setting Defaults with Strings or Symbols

[lrennels]

Setting a default value with a Symbol or String errors because of a check that tries to take ndims(default), we should adapt this so it does not error and returns 1. Examples below

works fine:

using Mimi
@defcomp mycomp begin
    p1 = Parameter{Symbol}()
    function run_timestep(p,v,d,t)
        #blank
    end
end
m = Model()
set_dimension!(m, :time, 1:10)
add_comp!(m, mycomp)
update_param!(m, :mycomp, :p1, :hello)
run(m)

breaks with the error below:

using Mimi
@defcomp mycomp begin
    p1 = Parameter{Symbol}(default=:hello)
    function run_timestep(p,v,d,t)
        #blank
    end
end
m = Model()
set_dimension!(m, :time, 1:10)
add_comp!(m, mycomp)
run(m)

[lrennels]

@bryanparthum thanks for the find!