Add MultiBar.update(forceRendering) option

[emmercm]

GenericBar lets you force rendering with .render(true), I'd love to do the same with MultiBar.

I'm running into an issue where a GenericBar is added and then removed from MultiBar so quickly that it never renders. I think MultiBar.remove() should also make use of this suggested MultiBar.update(forceRendering=true) behavior.

[ghost]

this package is trash but you can achieve that result using multibar.create(total, 0, { data: 123 }, { forceRedraw: true });

[emmercm]

I appreciate the solution, but there's no need to be inflammatory.