Support cloud storage and JSON output for datasets - When you create a dataset, you can now choose whether to upload files from a local file system or to select files and folders from Amazon S3. For Amazon S3 datasets, Textual generates the output to a configured output location. You can also configure a dataset to generate JSON output instead of redacted files. The JSON output matches the output currently produced by Textual pipelines. Note that after we add support for Azure and Sharepoint datasets, we plan to deprecate and remove pipelines.