of a variable, so now the number of samples can be modified.

the graph from a experiment and modify some variables within it.

Libray is now independent from the rest of the code and each class has its own
header file, in order to make it more legible.

It would be a good idea to make the x axis of the cartesian chart modifiable
according to the changes in the samples number by a Modifier object. Perhaps
using pointers.

A new class "Graph" was added to allow the creation of different kinds of graphs (Vertical bar, horizontal bar, cartesian), and now, there is a sample code for the creation of a menu with three options directing to each type of graph.

First code for creating a screen containing a menu with several options.

Object-oriented code for creating a "screen" capable of containing a menu with various options.