*  The `AndroidAsyncDns` class moved to the `okhttp` artifact.
 *  The `AndroidLogging` class is no longer necessary. `LoggingEventListener` and
    `HttpLoggingInterceptor` write to logcat by default.

The rest of this release is our highest-quality release yet. Though we continue to use the word
_alpha_ in the version name, the only unstable thing in it is some non-final APIs tagged

        .Builder()
        .body("abc")
        .build(),
    )
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(
          HttpLoggingInterceptor()
            .setLevel(HttpLoggingInterceptor.Level.BODY),
        ).build()
    val call =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),

    This class is in the `logging-interceptor` artifact.
 *  New: `Headers.Builder.addUnsafeNonAscii()` allows non-ASCII values to be added without an
    immediate exception.
 *  New: Headers can be redacted in `HttpLoggingInterceptor`.
 *  New: `Headers.Builder` now accepts dates.
 *  New: OkHttp now accepts `java.time.Duration` for timeouts on Java 8+ and Android 26+.
 *  New: `Challenge` includes all authentication parameters.

       <version>2.6.0</version>
     </dependency>
     ```

    Configure basic logging like this:

    ```java
    HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
    loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BASIC);
    client.networkInterceptors().add(loggingInterceptor);
    ```

    **Warning:** Avoid `Level.HEADERS` and `Level.BODY` in production because

HSPLokhttp3/logging/HttpLoggingInterceptor$Logger$Companion$DefaultLogger;-><init>()V
HSPLokhttp3/logging/HttpLoggingInterceptor$Logger;-><clinit>()V
HSPLokhttp3/logging/HttpLoggingInterceptor;-><init>(Lokhttp3/logging/HttpLoggingInterceptor$Logger;I)V
HSPLokhttp3/logging/LoggingEventListener$Factory;-><init>(Lokhttp3/logging/HttpLoggingInterceptor$Logger;I)V

    between Kotlin's `assert()` and Java's `assert()`. (Kotlin always evaluates the argument; Java
    only does when assertions are enabled.)

 *  Fix: Honor `RequestBody.isOneShot()` in `HttpLoggingInterceptor`.


## Version 4.2.2

_2019-10-06_

 *  Fix: When closing a canceled HTTP/2 stream, don't send the `END_STREAM` flag. This could cause

 *
 * ```java
 * // The singleton HTTP client.
 * public final OkHttpClient client = new OkHttpClient.Builder()
 *     .addInterceptor(new HttpLoggingInterceptor())
 *     .cache(new Cache(cacheDir, cacheSize))
 *     .build();
 * ```
 *
 * ## Customize Your Client With newBuilder()
 *