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.