docs: update changelog with 1.9.0 changes

Author: d-Rickyy-b

CHANGELOG.md

@@ -7,24 +7,35 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 ### Added
+### Changed
+### Removed
+### Fixed
+### Docs
+
+## [1.9.0] - 2026-04-03
+### Added
 - Ability to store and resume processing of certs from where it left off after a restart - see sample config "recovery" (#49)
 - New CLI switch for creating an index file from a CT log (#49)
 - Support for [Static CT](https://github.com/C2SP/C2SP/blob/main/static-ct-api.md) logs 
 - Check for retired CT logs and prevent them from being watched / stop watching them (#77)
 - Accept websocket connections from all origins
 - Option to disable the default logs provided by Google - see sample config "disable_default_logs"
 - Use of cobra for CLI argument parsing. New commands for displaying version and creating an index file
+- Override confiuration options via environment variables (e.g. `CERTSTREAM_WEBSERVER_LISTEN_PORT=1234` to change the listen port)
+- New field in json `source.timestamp` representing the timestamp of when the cert was processed by the CT log (#98)
+
 ### Changed
-- The configuration file for the docker container is now read from the /app/config/ directory (b9e5e6)
+- **Breaking:** The configuration file for the docker container is now read from the /app/config/ directory (b9e5e6)
+
 ### Removed
-- Non-functional Dodo log from sample config (#78)
+- Deleted non-functional Dodo log from sample config (#78)
+
 ### Fixed
 - Properly remove stopped ct log workers (#74)
 - Added missing fields certificatePolicies and ctlPoisonByte (#85)
 - Prevent race condition caused by simultaneous rw access to logmetrics (#91)
 - Properly display metrics for all initially watched logs (#95)
 - Properly add new metrics for all newly found logs (#96)
-### Docs
 
 ## [1.8.2] - 2025-11-22
 ### Fixed
@@ -159,7 +170,8 @@ Fixed the connection issue due to the offline Google loglist urls.
 ## [1.0.0] - 2022-08-08
 Initial release! First stable version of certstream-server-go is published as v1.0.0
 
-[unreleased]: https://github.com/d-Rickyy-b/certstream-server-go/compare/v1.8.2...HEAD
+[unreleased]: https://github.com/d-Rickyy-b/certstream-server-go/compare/v1.9.0...HEAD
+[1.8.2]: https://github.com/d-Rickyy-b/certstream-server-go/compare/v1.8.2...v1.9.0
 [1.8.2]: https://github.com/d-Rickyy-b/certstream-server-go/compare/v1.8.1...v1.8.2
 [1.8.1]: https://github.com/d-Rickyy-b/certstream-server-go/compare/v1.8.0...v1.8.1
 [1.8.0]: https://github.com/d-Rickyy-b/certstream-server-go/compare/v1.7.1...v1.8.0