Warning: "Unknown props `active`, `activeKey`, `activeHref"

I am getting the following annoying warnings in the browser console:

> warning.js:19 Warning: Unknown props `active`, `activeKey`, `activeHref` on < li> tag. Remove these props from the element. For details, see https://fb.me/react-unknown-prop
> in li (created by ActiveComponent)
> in ActiveComponent (created by withRouter(ActiveComponent))
> in withRouter(ActiveComponent) (created by MainLayout)
> in ul (created by Nav)
> in Nav (created by MainLayout)
> in div (created by NavbarCollapse)
> in Transition (created by Collapse)
> in Collapse (created by NavbarCollapse)
> in NavbarCollapse (created by MainLayout)
> in div (created by Grid)
> in Grid (created by Navbar)
> in nav (created by Navbar)
> in Navbar (created by Uncontrolled(Navbar))
> in Uncontrolled(Navbar) (created by MainLayout)
> in div (created by MainLayout)
> in MainLayout (created by RouterContext)
> in RouterContext (created by Router)
> in Router (created by App)
> in App

According to https://github.com/react-bootstrap/react-bootstrap/issues/1994, react-router-active-component should filter out irrelevant props coming from parent components. Unless the culprit is `react-router`?

On another note, it would be good if you could publish the typings to allow easy usage with TypeScript.