NetNewsWire 6.0b2 for Mac

Feeds list: when dragging feeds/folders from one account to another, the operation is now always copy, to avoid data loss due to misunderstanding that moving a feed between accounts does not move its read/starred statuses
iCloud sync: refined logic to improve performance of large uploads
Fixed a crashing bug that could happen when deleting an iCloud-synced folder
Fixed a crashing bug, triggered by bad server data, that could happen when validating credentials with syncing systems that use the Reader API