update readme and changelog

Author: good-lly

CHANGELOG.md

@@ -1,13 +1,25 @@
 # Changelog
 
-## [0.4.0] - soon
+## [0.4.0] - 2025-07-01
 
 ### Changed
 
 - Renamed `s3mini` class to `S3mini` to follow TypeScript naming conventions.
 - `s3mini` is now an alias for `S3mini` with deprecated usage flag.
+- Updated all references in the codebase to use `S3mini` instead of `s3mini`.
+- Fixed Minio health check and its docker image. (Thanks @ScArLeXiA)
 
-## [0.3.0] - 2023-10-15
+### Added
+
+- Added `ListObject` interface type for better type safety in list operations.
+- Added `CHANGELOG.md` to track changes and `BREAKING.md` for breaking changes.
+- Added SSE-C support for server-side encryption with customer-provided keys. (Tested on Cloudflare only!)
+
+### Fixed
+
+- Fixed `getEtag` method to properly handle conditional requests and return `null` when no ETag is present.
+
+## [0.3.0] - 2025-06-22
 
 ### Changed
 
@@ -16,3 +28,5 @@
 - `size` → `Size`
 - `lastModified` → `LastModified`
 - `etag` remains `etag`
+
+More: [https://github.com/good-lly/s3mini/releases/tag/v0.3.0](https://github.com/good-lly/s3mini/releases/tag/v0.3.0)

README.md

@@ -69,6 +69,8 @@ The library supports a subset of S3 operations, focusing on essential features,
 - ✅ uploadPart
 - ❌ CopyObject: Not implemented (tbd)
 
+Put/Get objects with SSE-C (server-side encryption with customer-provided keys) is supported, but only tested on Cloudflare R2!
+
 ## Installation
 
 ```bash