KinesteX v2.08.2: Better webm support detection and an option for you to force m4a usage

This update introduces a quick improvement to our detection of the webm support for audio, we noticed that in nested iframe setups the webm support might be limited and incorrectly flag support, so improved our detection making it stricter, but we also allowed you to force m4a usage. It might be useful if the auto detection fails.

To use it, you can pass in customParameters: enableM4a: true.