No service / method available to upsert a geocache's user-coords

[hxdimpf]

I guesss the subject already says it all. There is no method to upsert a geocache's user-coords. Look at the service:

https://www.opencaching.de/okapi/services/caches/save_personal_notes

There should be one like this:

https://www.opencaching.de/okapi/services/caches/save_user_coords

This service should be laid out such that passing a blank value actualle removes the user-coords from the cache entity.

[hxdimpf]

this is now being tracked by a new function issue and PR. Issue #628 and PR #629