Warning message when using parametric stoichiometries

[TorkelE]

MWE:

@reaction_network begin
    @parameters n
    1.0, n*X --> Xn
end

Currently gives a warning:

┌ Warning: Reaction rate laws are expected to have units of 1.0  however, 1.0, n*X --> Xn has units of 1.0 ^n.
└ @ Catalyst ~/.julia/dev/Catalyst/src/networkapi.jl:1629

[TorkelE]

This works now, think it was fixed with the unit updates