Hierarchical namespace for Cloud Storage buckets is now available in Preview

## Feature [Hierarchical namespace](https://cloud.google.com/storage/docs/hns-overview) for Cloud Storage buckets is now available in [Preview](https://developers.google.com/maps/launch-stages#preview). With hierarchical namespace, you can store your data in a logical file system structure. ## Issue [Renaming a folder](https:///cloud.google.com/storage/docs/rename-hns-folders) in a bucket with hierarchical namespace enabled using command line is not supported. ## Feature Cloud Storage FUSE now offers list caching, which is a cache for directory and file list, or `ls`, responses that improves list operation speeds. To learn more about list caching and how to enable it, see the [Cloud Storage FUSE caching overview page](https://cloud.google.com/storage/docs/gcsfuse-cache#list-cache-overview).