* I've noticed that on a new version of the inspector, I have to go to the browser's devtools panel and clear site data then reload the page.
* The assets are hashed and immutable, so caching should be allowed for them
* The index.html file is the problem, because if cached, it will point to old assets, and therefore needs to have caching turned forf
* This PR adds appropriate headers to the index.html and assets that are served.
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