0.3-2021-06-29

    This release is somewhat incompatible with previous versions for what's
    related to the displaying value in currency units (using any
    ``display_in_currency_units`` or shortcuts). If you want old behaviour,
    add ``format=DISPLAY_FORMAT_NUMBER`` to places where you used
    ``display_in_currency_units`` method or a correspondent shortcut function.

• Add locale and decimal_quantization args to the format_currency
  everywhere.
• Do not provide a default value for format (follow the babel defaults
  approach).