commenting out delete_these keys only necessary if running ./get_data.py

[mattkiefer]

running lib/render_json.py and lib/render_includes.py separately obviates this change

[benlk]

Would it be possible to modify function render_cases_json() with an argument for whether these should be deleted, instead of just commenting them out initially? That would allow get_data.py to exclude those options, but other calls to the function to not exclude them.

[mattkiefer]

Could also create a new in-memory copy of the optimized case dict, i.e.:
opt_case = dict((x,case[x]) for x in case.keys if x not in delete_these)