*  Fix: Don't offer to do gzip if the request is partial.
 *  Fix: MockWebServer is now usable with JUnit 5. That update [broke the rules][junit_5_rules].
 *  New: Support `Expect: 100-continue` as a request header. Callers can use this header to
    pessimistically hold off on transmitting a request body until a server gives the go-ahead.
 *  New: Permit network interceptors to rewrite the host header for HTTP/2. This makes it possible

      val queryEnd = url.delimiterOffset('#', queryStart, url.length)
      return url.substring(queryStart, queryEnd)
    }

  /**
   * This URL's query, like `"abc"` for `http://host/?abc`. Most callers should prefer
   * [queryParameterName] and [queryParameterValue] because these methods offer direct access to
   * individual query parameters.
   *
   * | URL                               | `query()`              |

      .isEqualTo("http://host/?a=%21%24%28%29%2C%2F%3A%3B%3F%40%5B%5D%5C%5E%60%7B%7C%7D%7E")
    assertThat(url.queryParameter("a")).isEqualTo("!$(),/:;?@[]\\^`{|}~")
  }

  /**
   * When callers use `addEncodedQueryParameter()` we only encode what's strictly required. We
   * retain the encoded (or non-encoded) state of the input.
   */
  @Test
  fun queryCharactersNotReencodedWhenComposedWithAddEncoded() {