Standard Decimal Handling across Elixir

[Qqwy]

@hubertlepicki

I guess it would make only sense to have it part of the core if it was a simple type, that could use +/-/* operators. If we kept the need to use Decimal.add and friends , this can very well be a separate lib.

I agree with this sentiment.

Unfortunately, as +, -, etc are not expected to be overridden because they would stop working in guard clauses (There’s some things we just cannot do in guard clauses right now), I don’t think this will happen anytime soon.