*  **OkHttp now rejects request headers that contain invalid characters.** This
    includes potential security problems (newline characters) as well as simple
    non-ASCII characters (including international characters and emoji).

 *  **Call canceling is more reliable.**  We had a bug where a socket being
     connected wasn't being closed when the application used `Call.cancel()`.

Но внутреннее устройство **конкурентности** и **параллелизма** довольно разное.

Чтобы это понять, представьте такую картину:

### Конкурентные бургеры

<!-- The gender neutral cook emoji "🧑‍🍳" does not render well in browsers. In the meantime, I'm using a mix of male "👨‍🍳" and female "👩‍🍳" cooks. -->

org.apache.maven.plugin.coreit; public synchronized class DMojo extends org.apache.maven.plugin.AbstractMojo { public void DMojo(); public void execute(); } org/apache/maven/plugin/coreit/EMojo.class package org.apache.maven.plugin.coreit; public synchronized class EMojo extends org.apache.maven.plugin.AbstractMojo { public void EMojo(); public void execute(); } org/apache/maven/plugin/coreit/ItMojo.class package org.apache.maven.plugin.coreit; public synchronized class ItMojo extends org.apache.maven.plugin.AbstractMojo...