Updates to text from review comments

CHANGELOG.md

@@ -2,16 +2,14 @@
 
 ## 202009.00 (September 14, 2020)
 
-- This release introduces re-designed MQTT client library, JSON parser library and the AWS IoT Shadow client library.
+- This release introduces re-factored MQTT client library, JSON parser library and the AWS IoT Shadow client library.
 - The AWS IoT Jobs service client library is not part of this release. It will be part of a future release.
-- The MQTT, JSON and AWS IoT Shadow service client libraries have been moved to the following individual repositories:
+- This release uses submodule references to the following new individual repositories for the MQTT, JSON and AWS IoT Shadow service client libraries under `libraries` folder:
    - [FreeRTOS/coreMQTT](https://github.com/FreeRTOS/coreMQTT) for MQTT client library
    - [FreeRTOS/coreJSON](https://github.com/FreeRTOS/JSON) for JSON parser library
    - [aws/device-shadow-for-aws-iot-embedded-sdk](https://github.com/aws/device-shadow-for-aws-iot-embedded-sdk) for AWS IoT Shadow service client library.
-- The above library folders in `libraries/` folder has been replaced with submodule to the individual repositories.
-- Commit [6f88ba7](https://github.com/aws/aws-iot-device-sdk-embedded-C/commit/6f88ba7e5471b550f9b9c0fb9bed7ef6e1230caf) has been tagged as [v3.1.0](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v3.1.0) SDK. The commit was part of the `master` branch following
-the commit tree of the [v3.0.1](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v3.0.1) release. [v3.1.0](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v3.1.0) is **NOT** a released
-version.  
+- This release is **NOT** backwards compatible with the v3.x release series. To refer to the most recent fixes on top of the [v3.0.1](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v3.0.1) SDK, the commit [6f88ba7](https://github.com/aws/aws-iot-device-sdk-embedded-C/commit/6f88ba7e5471b550f9b9c0fb9bed7ef6e1230caf) has been tagged as [v3.1.0](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v3.1.0) SDK. The commit was part of the `master` branch following
+the commit tree of the [v3.0.1](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v3.0.1) release.
 
 ## [3.0.1](https://github.com/aws/aws-iot-device-sdk-embedded-C/releases/tag/v3.0.1) (May 10, 2018)