v0.3.0

Changed (breaking)

• Updated the Base class to accept 'null' (string) as a valid value
• Removed the "breaking" helper methods and attribute - it is now simply a format-setting
• Changed "nullZero" and "nullString" options to "null=x"
• Changed decPl to be a "decPl=x" format-setting

Changed

• Updated documentation

Fixed

• Changed the Laravel unit-test to an integration-test, and updated it to use the service-provider