Daniel Moura

`to_json(.a_dict_col)` would generate a json string. Follow-up of #94

Tried to add Python 3.11 but broke the build: ``` Installing build dependencies: started [66](https://github.com/dcmoura/spyql/actions/runs/3609720398/jobs/6083085988#step:4:67) Installing build dependencies: finished with status 'done' [67](https://github.com/dcmoura/spyql/actions/runs/3609720398/jobs/6083085988#step:4:68) Getting requirements to build wheel: started [68](https://github.com/dcmoura/spyql/actions/runs/3609720398/jobs/6083085988#step:4:69)...

Support reading and writing of JSON objects (not JSON lines)

1

Currently SPyQL only allows to read and write JSON lines. Writing JSON arrays can be done using the `dict_agg`, aggregating everything into an array and writing an JSON with a...