* feat(utils/stream): enable to abort streaming manually
* feat(utils/stream): prevent multiple aborts, and enable to get the abort status
* fix(streaming): call `stream.abort()` explicitly when request is aborted
* test: add tests for streaming
* docs(stream): add comments
* test: add --allow-net to deno test command in ci.yml
* test(streaming): update test code
* test(stream): retry flaky test up to 3 times at "bun"
* test(streaming): refactor test to use afterEach
* fix(streaming): in bun, `c` is destroyed when the request is returned, so hold it until the end of streaming
* refactor(streaming): tweaks code layout
* test(vitest): replace `jest` with `vitest` for core tests
* test(fastly): `jest` -> `vitest`, correct env for fastly
* test(jest): remove `jest-environment-miniflare` as dep
* test(lagon): configure `lagon` tests to run on `vitest`
* test(lambda): `jest` -> `vitest`
* test(lambda-edge): `jest` -> `vitest`
* test(node): `jest` -> `vitest`
* test(wrangler): `jest` -> `vitest`
* chore(deps): remove `jest` and `ts-jest` from deps
* test(vitest): add `yarn coverage` for checking coverage
* test(fastly): fix check for `globalThis.crypto`
* test(handler): fix stray `.only`
* test(lagon): change env file back to original path
* test(fastly): go back to `jest` until `vitest` has support for fastly env
* test(fastly): remove hack for the `crypto` global from the test
