Most Dashing widgets require a job to pull information from the outside world. When data is pushed to a widget (with Curl for example), the past is usually lost and the new data is plotted / displayed.
I needed a widget that could have some memory of the past, and add the new pushed information to the past, not only display it.
To use this widget, copy activenumber.html, activenumber.coffee, and activenumber.scss into the /widgets/activenumber directory.