HTTP/1.1. We also reimplemented our websocket client to use this new mechanism.

 *  New: The `okhttp-zstd` module negotiates [Zstandard (zstd)][zstd] compression with servers that
    support it. It integrates a new (unstable) [ZSTD-KMP] library, also from Square. Enable it like
    this:

    ```kotlin
    val client = OkHttpClient.Builder()
      .addInterceptor(CompressionInterceptor(Zstd, Gzip))
      .build()

    interval of 30 seconds is reasonable for most use cases.

 *  **OkHttp now supports [Conscrypt][conscrypt].** Conscrypt is a Java Security
    Provider that integrates BoringSSL into the Java platform. Conscrypt
    supports more cipher suites than the JVM’s default provider and may also
    execute more efficiently.

  - [alpha] Kubelet launches container in a per pod cgroup hierarchy based on quality of service tier ([kubernetes/features#126](https://github.com/kubernetes/enhancements/issues/126))
  - [beta] Kubelet integrates with memcg notification API to detect when a hard eviction threshold is crossed ([kubernetes/features#125](https://github.com/kubernetes/enhancements/issues/125))