1.0.4

Correction in RomanConverter to handle "IXV"numbers (subtraction and addition) as errors.
Removed the usage of pattern matching in switch/case block.
Included a visitor.

1.0.3

Removed some rule order constraint in romanconverter.
Adjusted some properties names in Roman class.

1.0.1

Fixes when a roman number is presented in form like: "IIX" (double subtraction) It will considered invalid.

1.0

Initial version of the Merchant's Guide to the Galaxy.