Added first attempt of Sylfaen.extends method to allow simple Object inheritance.
Added some tests for Sylfaen.extends() method.
Added support for Sylfaen.mixin method to ease object creation / extension.
Added support for basic Sylfaen.Class object from which all Sylfaen classes will inherit.
Added Sylfaen.Support.Logger module and set on the basic Sylfaen.Class.prototype object.