Rene Rubalcava | January 4, 2017
You are not required to use this widget framework, you can always just build your own widgets how you want to, but the widget framework is how the out-of the-box widgets of the API are being built.
There is some great documentation in the SDK on how to create your own custom widgets, and a great sample you can review as well.
You can find the sample code used in this videol on github. It has a couple of fixes not in the video, like a rendundant use of
renderable() in the Widget View Model.