title: Kotlin native error unresolved reference coroutines
body: <p>I'm trying to build a native in Windows.</p>
  
  <p>I'm not sure where to put the dependency for implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5'. </p>
  
  <p>My current gradle file looks like this:</p>
  
  <pre><code>buildscript {
      ext.kotlin_version = '1.3.72'
      repositories {
          mavenCentral()
  
      }
      dependencies {
          classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
      }
  }
  
  plugins {
      id 'org.jetbrains.kotlin.multiplatform' version '1.3.72'
  }
  
  dependencies {
      implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5'
  }
  
  repositories {
      mavenCentral()
      jcenter()
  }
  kotlin { 
      mingwX64("mingw") {
          binaries {
              executable {
                  // Change to specify fully qualified name of your application's entry point:
                  entryPoint = 'sample.main'
                  // Specify command-line arguments, if necessary:
                  runTask?.args('')
              }
          }
      }
      sourceSets { 
          mingwMain {
  
          }
          mingwTest {
          }
  
      }
      experimental {
          coroutines 'enable'
      }
  
  }
  </code></pre>
  
  <p>This dependency line gives error: </p>
  
  <pre><code>dependencies {
          implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5'
      }
  </code></pre>
  
  <p>The error is:</p>
  
  <pre><code>Could not find method implementation() for arguments [org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
  </code></pre>
  
  <p>If I remove that dependency, I get "unresolved Reference" if I try to import kotlinx.coroutines.* and kotlin.concurrent.thread</p>
  
  <p>Appreciate some help on this.</p>
  
  <p>Thanks</p>