Most of the people who start out new don't find a latest feed of community hyped resources on ML and DL topics. It would be pretty good if we add a Reddit section.
If you're fine with this suggestion I'll put up a PR with the update 😄

Datetime fields are converted with the datetime_to_serial_number function to integers on writing to the sheet. However, this can be a problem right now when sorting, as python will attempt to compare a datetime object (from a newly added item) with an int object (read from the existing table) and break.

Perhaps datetime objects should be converted to ints when adding them to the table, or they