DEPR: keep_default_dates and convert_dates in read_json

[mroeschke]

read_json has convert_dates, keep_default_dates and dtypes that all try to perform dtype conversions on the result from the ujson parser. Conflicts can arise when a column matching the specification of keep_default_dates matches a column specified in dtypes.

The proposal is to deprecate keep_default_dates and convert_dates and only use dtype's current definition of

• True: attempt dtype conversion on all column (and refactor to use infer_dtype instead of astype guessing)
• False: perform no dtype conversion
• dict: dict keys that match column labels will be cast to type in the dict value

[Animesh-Shukla]

taking this issue

[phershbe]

@Animesh-Shukla are you still working on this? Your take was from a few weeks ago so I think that I am going to take this since I contributed on here a while ago and want to start again. If you still want it or want to work on it together, let me know!

[Animesh-Shukla]

you can take it @phershbe

[phershbe]

take

[phershbe]

I have most of a draft pull request mentioned here, but some tests are not passing so I am working on identifying the reasons and fixing them

[phershbe]

I created a pull request but have struggled with this issue, I don't want to keep in blocked so I unassigned myself in case anybody else would like to work on it.