Update CHANGELOG

CHANGELOG.md

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 # Changelog
 
+## [1.1.0] (Unreleased)
+
+**Documentation**
+
+- Added support for concurrent processing, along with deep refactoring of the code base for better performance. ([#29](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/29))
+
+- Upgraded _Gradle_ to version 8.11.1. ([#29](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/29))
+
+- Added some style changes to the [README.md](README.md) and factory [adapters.xml](kafka-connector-project/kafka-connector/src/adapter/dist/adapters.xml) files. ([#28](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/28))
+
+- Introduced the [Client Side Error Handling](README.md#client-side-error-handling) section in the [README.md](README.md) file. ([#17](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/17))
+
+
 ## [1.0.7] (2024-11-06)
 
 **Improvements and Documentation**
 
 - Revised some default settings for the internal Kafka consumer. ([#25](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/25))
 
 - Improved the [README.md](README.md) file. ([#18](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/18), [#20](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/20),
-[#21](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/21), [#22](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/22))
+[#21](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/21),
+[#22](https://github.com/Lightstreamer/Lightstreamer-kafka-connector/pull/22))  
 
 - Significantly reorganized the [examples](examples) folder. Specifically: