Support for Encapsulation

[thisham]

Yalija's class was supports method(s) and property(es). When code with OOP paradigm, we using class. But, yalija doesn't support encapsulation yet. But, we often using encapsulation when we develop with OOP.

Languages that support OOP paradigm usually support encapsulation for managing access of its methods and properties. Maybe yalija should implements it too.