added frozenTopRezise and cell_class

You can resize the grid using the topRight frozen column; this is meant to hide the actual columns header, so you can have a frozenTop sortof header that in SELECTABLE

cell_class
If the data is a objet, not just a value, then it will look for attribute value to set as the currrent value, and cell_class atribute to set it as a class in that especific cell.

example: data[9][6]= 'some data'  -> data[9][6]= {value: 'some data', cell_class: 'some-data-class'}