Upgrade gwdatafind to first-class dependency
This PR upgrades gwdatafind
to a first-class dependency. This was the case in practice already since dqsegdb2
is a dependency and depends in turn on gwdatafind
, but this allows us to clean up some imports.
I also took this chance to clean up the dependency lists as they exist across various files, now all alphabetically ordered, and rechecked.