Fixed non-working methods, code cleaned.

v1.0.6

added tests

Moved to ES6 classes, fixed documentation

v1.0.5

updated version, switched to ES6 class

Added aliases

Added aliases for mult and sub

v1.0.3

Now methods can be chained

Added min() and max() methods

Added min() and max() methods

Small update

Added sub() method as alias for subtract().

First released version

First version!