A minor improvement from 3.0.0: Built javascript bundles are now served from a versioned path (eg /static/3.0.1/...js) so that you don't need to clear your browser or downstream cache on a new build. #259
The gallery page has a configurable cache time (ipp.gallery.cacheTime, default 5 minutes), so be aware that when you upgrade IPP and look at an existing gallery page, you won't see new features until that cache times out, or until you clear downstream caches.