A library for manipulating well-formed Roman numerals.

Integers between 1 and 3,999 (inclusive) are supported. Numbers
beyond this range will return an OutOfRangeError.

The classical system of roman numerals requires that the same
character may not appear more than thrice consecutively, meaning
that 'MMMCMXCIX' (3,999) is the largest well-formed Roman numeral.
The smallest is 'I' (1), as there is no symbol for zero in Roman
numerals.

Both upper- and lower-case formatting of roman numerals are supported,
and likewise for parsing strings, although the entire string must
be of the same case. Numerals that do not adhere to the classical
form are rejected with an InvalidRomanNumeralError.

Homepage:
https://github.com/AA-Turner/roman-numerals/
