Currently the only way to change settings in data-bind is to 
destory and bind again.

Would be nice to make changes to a existing binding, like data-bind="value: property1" to data-bind="value: property2"
or add/remove dataSource or events.

like you can do with setDataSource on Widgets.

Problem: If you have autoBind, rebind make changes to dataSource,
or you maybe not know about the observables value property on widget creation, but don't want to destroy users work on a widget.