Release 1.30.1

Page moves, measured on Live with a 400 ms network: the bar runs from the click, "Loading Content…" appears at 150 ms and follows the phase ("starting up"), the styled page fades in, and nothing shows unstyled in between. Fixes to 1.30.0: the first move after a server-rendered page is animated (the "first page" is the first enter() before any route change, route generation ≤ 1, not simply the first call); route-transition.js is fetched a few seconds after load, so it is ready for the first click; the loading line sits over the page's visible area but outside the section (a page script that re-renders its section while loading can no longer take it away); the file is requested by path, so the site's versions map hashes it.