Merge pull request #6 from jhmarina/add-release-notes

Add latest release notes

blog/2023-08-03-release-notes-0.19.md

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+# Release Notes - v0.19.0
+
+This release contains various fixes and improvements in the backend. Most
+notably, error handling, multipart handling and internal bookkeeping of objects
+has improved.
+
+This release is meant for testing and feedback gathering. It is not recommended
+for production use.
+
+Should a bug be found and not expected to be related to the list below, one
+should feel encouraged to file an issue in our
+[GitHub repository](https://github.com/aquarist-labs/s3gw/issues/new/choose).
+
+## Features
+
+- rgw/sfs: Log SQLite error / warning messages
+- rgw/sfs: Add SQLite retries and error handling
+- rgw/sfs: Improve multipart handling
+- ui backend: Add endpoints for user management
+- ui backend: Add bucket management endpoints
+- ui frontend: Allow creating admin users
+
+## Fixes
+
+- rgw/sfs: Fix Invalid argument exception on exit with telemetry off
+- rgw/sfs: Fix delete bucket when not empty
+- rgw/sfs: Abort on-going multiparts on bucket removal
+- rgw/sfs: Fix bucket listing
+- rgw/sfs: Various fixes to object state transitions
+- ui frontend: Fix table header on zoom-in
+- ui frontend: Fix bucket deletion dialogue in `Administrator` mode
+- ui frontend: Fix creating keys for users
+
+## Breaking Changes
+
+- On-disk format for the metadata store changed
+
+## Known Issues

blog/2023-08-31-release-notes-0.20.md

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+# Release Notes - v0.20.0
+
+This release contains significant improvements and new bug fixes, particularly
+in the s3gw backing store. Notably, this release brings garbage collection,
+improved bucket listing, including filtering, and conditional GETs.
+
+This release is meant for testing and feedback gathering. It is not recommended
+for production use.
+
+Should a bug be found and not expected to be related with known issues, one
+should feel encouraged to file an issue in our
+[Github repository](https://github.com/aquarist-labs/s3gw/issues/new/choose).
+
+## Features
+
+- rgw/sfs: Query-based version listing
+- rgw/sfs: Support conditional GETs
+- rgw/sfs: New garbage collection implementation
+- rgw/sfs: Change on-disk file format, add suffixes
+- ui backend: Parity with operations required by UI
+
+## Fixes
+
+- rgw/sfs: Fix warnings after enabling more compilation flags
+- rgw/sfs: Several code cleanup efforts
+- rgw/sfs: use global part id for multipart parts
+
+## Breaking Changes
+
+- On-disk format for both metadata and data store have changed.
+
+## Known Issues