v3.1.0

Enhancements

• Decimal.new/2 now accepts an optional opts keyword list and
  forwards it to Decimal.parse/2, allowing callers to override
  :max_digits and :max_exponent when constructing a decimal from
  a string.

Bug fixes

• Fix infinite loop in Decimal.to_integer/1 when the coefficient is
  zero and the exponent is negative (e.g. Decimal.new("0.0")). Such
  values now correctly convert to the integer 0.