- Breaking: refreshed the service catalogue (some discontinued services dropped, many new ones added) along with a handful of API surface changes.
- Breaking: generated enums are now const classes instead of Dart enums, so unknown values from the server no longer throw.
- Added version-less imports: package:aws_client/.dart re-exports the latest API version (e.g. package:aws_client/s3.dart) alongside the existing version-pinned import.