title: AngularDart build version in files in HTML preventing caching new build
body: <p>I am trying to achieve build solution, where I would get (after <code>webdev build</code>) files with cache-resistant urls of files, e.g. in <code>index.html</code> there would be instead of <code>&lt;script defer src="main.dart.js"&gt;&lt;/script&gt;</code> something like <code>&lt;script defer src="main.dart.js?v=1.1.0"&gt;&lt;/script&gt;</code> – I don't really care if that is the version of the package version or some random hash.</p>
  
  <p>My point of this is that if I do build a new version, I need users to get this newest version, not a cached one from before (because of the same url).</p>