I want to use older versions of `Amazon FreeRTOS` and build the demo applications that the already provide by default. However, when I checked the [releases](https://github.com/aws/amazon-freertos/releases) I only get the source files belonging to a release when I download the `zip` file. I could not follow the latest user guide (as it is very different with older version - no `cmakefiles`, `cmakelist` files etc. in the older version folder) and neither I was able to find an older user guides to get started with older versions. Anybody know where to look in order to get started with developing using older versions? Big help. Thanks