File contents changes on google drive do not trigger re-downloads

[jordansread]

Right now this is specific to the coop temperature data in folder.

This was noted in #249 and in the review comment and some work was set up to make tracking this possible, including exposing the GD file hash in the 6_temp_coop_fetch/out/coop_all_files.rds file and the coop_wants object. But as of now, only the filenames go into the task tables, so downloads won't be triggered unless the filename has changed.

This could be addressed by adding the I({hash}) as a dummy arg to the task table for each download or some other solution that uses the hash.