Massive number of warnings when using ParamTools in Tax-Calculator

[martinholmer]

When using python 3.12.9, paramtools 0.19.0, and marshmallow 3.26.1 with Tax-Calculator, the pytest suite running on GitHub generates over one-hundred thousand warnings. Here is an excerpt:

The complete list of warnings is here.

Some of the warning messages seem to indicate that the current paramtools code will not work with the upcoming marshmallow 4.0.0 version.

@hdoupe, what is your plan for bringing paramtools up to date?

[hdoupe]

Thanks @martinholmer. I'll go ahead and do the updates.

[jdebacker]

Resolved with PR #146