Incrementally write output

[aph3rson]

If using this with a large number of usernames, the execution could take some time. Therefore, if an unhandled exception occurs (e.g. communication failure, I/O error, etc.), the script will stop executing, and all intermediate results will be lost.

If the script were to write results incrementally (i.e. once per attempt), instead of at the end of the execution, any intermediate fatal issues wouldn't compromise the output data. This would work well for CSV/text output, but might need some special handling for JSON.