End of support for aws-iot-device-sdk-embedded-C v3.0.1

Hi. Version 3.0.1 was released in May 2018. There were some bug fixes after that: https://github.com/aws/aws-iot-device-sdk-embedded-C/blob/main/CHANGELOG.md#310-september-08-2020. Per the change log for 3.1.0 (September 2020):

This represents the last tag for the v3 version of AWS IoT Device SDK for Embedded C.

I can see in the tags that it went up to 3.1.5 (December 2020): https://github.com/aws/aws-iot-device-sdk-embedded-C/tags

So V3 is no longer supported (in terms of bug fixes). There is no ongoing maintenance and there is no v3 branch.

Please be aware of the migration guide: https://aws.github.io/aws-iot-device-sdk-embedded-C/latest/docs/doxygen/output/html/migration_guide.html