2.2.1

Fixes a wrong-world write bug (edits could land in a different world when a stale key was set in plugin settings) and a rename that reported success without actually updating onlyworlds.com. Renames now sync only when the world has a write key, and say so clearly when they do not. Builds on 2.2.0: Download World, round-trip download-edit-upload, and both classic and ow_ key formats everywhere.