title: Exception "Module with the Main dispatcher is missing." in release APK only
body: <p>I'm using Kotlin 1.3 EAP and <code>kotlinx-coroutines-android:1.0.0-RC1</code> in my Android project. My development build succeeds and the app runs fine. However, when I <code>Generate Signed APK</code>, the app still builds and runs, but then crashes with</p>
  
  <blockquote>
    <p><code>java.lang.IllegalStateException</code>: Module with the <code>Main</code> dispatcher is missing. Add dependency providing the <code>Main</code> dispatcher, e.g. <code>'kotlinx-coroutines-android'</code></p>
  </blockquote>
  
  <p>Since the dev build runs fine, clearly there's no omission in the gradle files. I have these settings in place:</p>
  
  <p>Project <code>build.gradle</code>:</p>
  
  <pre><code>buildscript {
      ext.kotlin_version = '1.3.0-rc-190'
      ....
  </code></pre>
  
  <p>Module <code>build.gradle</code>:</p>
  
  <pre><code>dependencies {
      implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
      implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.0.0-RC1'
  </code></pre>
  
  <p>The same application has been running with many different versions of experimental coroutines over time, this is the first time I have experienced this issue. I suspect some interim problem in the EAP artifacts.</p>
  
  <p>What could I try to make this work?</p>