cloudflare/miniflare v2.1.0 on GitHub

Allow multiple build watch paths to be set in wrangler.toml files. Use the [miniflare] build_watch_dirs option. Note this gets merged with the regular [build] watch_dir option:
```
[build]
watch_dir = "src1"

[miniflare]
build_watch_dirs = ["src2", "src3"]
```
WebSocket handshake headers are now included in responses from the HTTP server and WebSocket upgrade fetches. Closes issue #151, thanks @jed.

Allow Miniflare to be installed with Yarn PnP. Closes issue #144, thanks @lookfirst, @merceyz, and @DJtheRedstoner.
Use the actual body length for the Content-Length header in HTTP server responses, instead of the value provided in the Response constructor. Closes issue #148, thanks @lukaszczerpak.
Don't rewrite the Host header to match the upstream URL. Closes issue #149, thanks @hansede.
Bump dependencies, fixing npm audit warnings. Thanks @leader22 for the PR.
Make instanceof spec-compliant, ensuring checks like Object instanceof Object succeed. This particular check was used by Lodash's _.isPlainObject() method, which is internally called by _.merge(), causing unexpected results.
Make the unimplemented Response#type property non-enumerable
Copy header guard when clone()ing Requests, ensuring Requests with immutable headers still have immutable headers when clone()ed
Fix race conditions in file-system watcher