added error catchers and expo_backoff calls to improve general kernel passive operation
fixed precursor_of in a bunch of products.csv.
Note sites_from_gdrive parameter of ms_delineate (bypasses delination and grabs files from gdrive if they exist, but you have to specify them here.
also download_from_gdrive_arbitrary
there are a few ws_boundaries (like krew) that get retrieved within a munge kernel. let's avoid that where possible in future, because it confuses our documentation. no need to change those cases where they already exist though.
@spencerrhea
sites_from_gdriveparameter of ms_delineate (bypasses delination and grabs files from gdrive if they exist, but you have to specify them here.download_from_gdrive_arbitrary