* Report memory allocated in fetch
* Memory size reporting to `Headers`
* Fixup memory reporting allocator
* Make these tests do more
* cleanup some of this
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Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
This matches Deno's behavior (get() combines, iterator preserves the order, set and append combine), but implements both the Cloudflare Workers `getAll()` and the potential standard `getSetCookie` function. The rationale for choosing both is to better support libraries which check for `getAll` and also because `getSetCookie` seems a little confusing (names are hard)
This also makes `.toJSON` and JSON.stringify return an array for `Set-Cookie`
