Preact Async Route Versions Save

Adds TS bindings for preact-async-route

The loading now starts at componentWillMount so that component can be rendered on server as well.

No more re mounting of same component on same path.

in order to make usage of already imported components now preact-async-route will support 2 props

1. component this will just take the JSX component itself and NOT the function
2. for function calls getComponent is the prop

check README