add graph output capability to arepldump library

[Almenon]

A reviewer commented:

Is there anything planned in order to plot graphs (Matplotlib, pyplot, bokeh, etc.?

I could add a method to arepldump library that would take in a numpy array and output it. Then on the frontend I would look for this output and use the numbers to populate a graph.

[Almenon]

additionally in the method I could look at the previous frame in the stack to fine the line number and output that. In the frontend I could use the line number to insert the graph in-line with the code right below the line that calls the dump func.