Release v0.3.0

Changelog

Added

• implement deletion of S3 object(s)
• implement upload of local file(s) to S3
• implement download of S3 object(s)
• allow to switch between S3 buckets
• implement dry run mode which disables all write operations

Changed

• migrate codebase to new Textual version 0.38.1

Removed

• remove components that have been replaced with built-in Textual components