Moved addRow/addColumn to prototype
Moved isSquare/isVector to prototype
Moved copy() to prototype
Moved contains() to prototype
Moved equals() to prototype
Moved toString() to prototype
Moved diag() to prototype
Refactored dim()
Moved dim() to prototype
Moved __convertToIndex() to prototype
Moved get() and set() to prototype
Moved setRow to prototype
Moved getColumn() and setColumn() to prototype
Refactoring
Moved length to prototype and renamed to size, renamed toString to stringify
Bugfix in stringify()
JSDoc fix