This is version 0.3. It will create, edit and delete the creation caches. However, deletion does not yet remove post-meta data, so this is a bug. Also, I can create the .gpx and .loc files on the fly, but I have not yet got them to delete when the creation cache entry is deleted.
Finally, the storage directory for the .gpx and .loc files needs to be deleted when the plugin is uninstalled.