Migrated entire Codebase to Python-3 with Documentation

[iSiddharth20]

I have Migrated entire Program to Python-3 and have made minor changes to the Libraries used so that it is efficient to use with Python 3.6 or Higher. All Changes are mentioned in ChangeLog.MD present in the Pull Request.

[iSiddharth20]

@Himanshukaushik303 @cmmalone @ShengKungYi @JeremySilverTongue @13rac1 @jaycode @cbuckey-uda @nmb10 @adarsh0806 @GageAmes @jared-weed @adyates @igrigorik @ivikash @jcbwlkr @pwdono @richardkalehoff @sodabrew @svysali @udacity-content-dockerhub

I do not have Write Access to Merge these Approved Changes.
Kindly Provide me Write Access so that I can merge the Approved Changes.

Thank You

[SudKul]

Thanks, @iSiddharth20 for suggesting the updates to this repo.
We are grateful to you.

[maher-esmat]

why is it giving me that error:
File "E:\github\ud120-projects\datasets_questions\explore_enron_data.py", line 21, in
enron_data = joblib.load(open("../final_project/final_project_dataset.pkl", "rb"))

File "E:\github\ud120-projects\venv\lib\site-packages\joblib\numpy_pickle.py", line 577, in load
obj = _unpickle(fobj)
File "E:\github\ud120-projects\venv\lib\site-packages\joblib\numpy_pickle.py", line 506, in _unpickle
obj = unpickler.load()
File "C:\Program Files\Python39\lib\pickle.py", line 1212, in load
dispatchkey[0]
File "C:\Program Files\Python39\lib\pickle.py", line 1336, in load_string
raise UnpicklingError("the STRING opcode argument must be quoted")
_pickle.UnpicklingError: the STRING opcode argument must be quoted