exact as default

[frederikhors]

Maybe a breaking change but I think we need this.

From Readme:

<Router>
  <Route exact>Hello World</Route>
  <Route exact path="/svelte-component" component={SvelteComponent}/>
  <Route exact path="/promise" component={import('path/to/other-component.svelte')}/>
  <Route exact path="/async" component={() => import('path/to/another-component.svelte')}/>
</Router>

Can we omit exact? Can we use it as default?

All my routes are exact.

Can we use not-exact or similar for when not exact?

[pateketrueke]

Nope, I mean, we could add exact support on top-level <Router /> so it just inherit down.

But making it default will break nested routes and such.

What do you think?