Type piracy and method overwriting in SSS and HPS

[GabrielKS]

This:
https://github.com/NREL-Sienna/StorageSystemsSimulations.jl/blob/808b04dd796e770f014ec707f81b0106da7e1831/src/core/feedforward.jl#L160
is type piracy. The exact same thing is done in HPS, so it also causes a "Method definition… overwritten" warning.

Setting aside whether we want a method this broad, is there a reason we can't put this in PSI?

[jd-lara]

This:

https://github.com/NREL-Sienna/StorageSystemsSimulations.jl/blob/808b04dd796e770f014ec707f81b0106da7e1831/src/core/feedforward.jl#L160

is type piracy. The exact same thing is done in HPS, so it also causes a "Method definition… overwritten" warning.
Setting aside whether we want a method this broad, is there a reason we can't put this in PSI?

This seems like an oversight we need to remove.