fixed 1.0.0-beta3

A starting point for Dart libraries or applications.

1.0.0-beta3

• changes the underlying implementation to use the decimal package Thanks to Alexandre Ardhuin for the significant contribution that made this possible :)
• Created statics for one, two and zero. Created consts for maxInt and minInt. Added ~/, %, remainder, abs, sign, pow, toInt
• change thousandSeparator to groupSeparator as this is the more generally used term
• Changed Fixed.fromBigInt to take minor units rather than major units as I found I was constantly misusing it. I think actually makes more sense you can always BigInt.toInt and Fixed.from to create a fixed from a BigInt.
• Fixed the formatter for small -ve numbers. Added a 'decimalPart' method to return just the decimal component of the fixed no. Renamed majorUnits to 'integerPart'

1.0.0-beta2

Improved the documentation.

1.0.0-beta1

First release of Fixed.