RubyMoney/money — pull request #460 by clowder (2014-11-10 12:17:06+00:00)
Title: Ensure [UnknownMoney::Currency] is a subclass of argument error.

This means that we now have an easy way to catch all money & currency parsing errors (via `[ArgumentError]`).

As per RubyMoney/money-rails#237.