Add CaseNumber and JudicialOfficer to extracted field set.

[abrie]

This PR addresses the missing fields noted in Issue #5. It adds CaseNumber and JudicialOfficer.

[bbrewington]

did a test run locally and got an error (I'm glad to look into it, but just sharing along for now)

% source venv/bin/activate
% pip install -r requirements.txt
% python3 dekalb_scraper.py --output csv > dekalb_scrape_202201180929.csv

Output:

Scraping Dekalb County court cases per judicial officer...
ID  Name
282 Adams, Gregory A.
Traceback (most recent call last):
  File "dekalb_scraper.py", line 149, in <module>
    run(args.output)
  File "dekalb_scraper.py", line 123, in run
    for fields in fields_of_interest
  File "dekalb_scraper.py", line 123, in <listcomp>
    for fields in fields_of_interest
TypeError: unsupported operand type(s) for |: 'dict' and 'dict'

[abrie]

Which version of Python are you using? The | operand is only present in Python 3.9+.

[bbrewington]

mine is 3.7.9

Options:

1. put a note in README.md saying Python 3.9 is requirement
2. refactor so it's compatible with 3.7

thoughts on which approach is bettter?

[bbrewington]

going forward w/ running a test using Python 3.9 (it's working so far) - will document that requirement in README. note to self: using virtualenv to run different Python versions

[bbrewington]

Succeeded, merging