Refine the xor_xnor experiment tutorial

[bstraus1]

Specifically, I will:

• Update the notebook using Jayanta's notebook
• Ensure that there are no warnings/unwanted outputs in the notebook (currently there are some)
• Go line by line with the code, explaining each step
• Move long functions to a separate .py file to improve readability
• Restrict sample sizes in the final figure to X>750
• Remove progress print statements throughout the code
• Find and replace all "FTE" with "BTE", and vice versa in the last figure

[levinwil]

@bstraus1 How is this different than https://github.com/neurodata/ProgLearn/blob/docs/docs/tutorials/xor_nxor_exp.ipynb?

[bstraus1]

Those three points I've written above.
In my opinion, the current experiment has too large blocks of code. I'll move long functions to a separate file and go line-by-line in the tutorial.

[levinwil]

Ok. Can you also please fix the following problem:

The region circled in black should not exist. If we don't have any data from N-XOR, we can't compute anything with respect to N-XOR.

[bstraus1]

Ah, so just restrict the x axis to sample sizes >750?

[levinwil]

Yup!

[levinwil]

@bstraus1 Could you also please get rid of all the progress print statements in the notebook?

[bstraus1]

Yep!

[levinwil]

Can you also switch the labels for FTE and BTE?

[levinwil]

@bstraus1 Can you please update the original checklist at the top of this issue to include the changes mentioned in the comments?

[bstraus1]

This issue can now be closed @levinwil. Sorry that I can't do this myself.