Update 'build.gradle'

build.gradle

@@ -30,10 +30,16 @@ kotlin {
         commonMain {
             dependencies {
                 implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+            	implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version"
 
                 implementation "com.soywiz.korlibs.klock:klock:$klockVersion"
             }
         }
+        jvm8Main {
+            dependencies {
+                implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version"
+            }
+        }
     }
 }