kotlin to 1.3.20

build.gradle.kts

@@ -1,8 +1,8 @@
 buildscript {
-    extra["kotlinVersion"] = "1.3.11"
+    extra["kotlinVersion"] = "1.3.20"
     extra["ioVersion"] = "0.1.2"
     extra["serializationVersion"] = "0.9.1"
-    extra["coroutinesVersion"] = "1.1.0"
+    extra["coroutinesVersion"] = "1.1.1"
 
     val kotlinVersion: String by extra
     val ioVersion: String by extra
@@ -35,7 +35,7 @@ allprojects {
     }
 
     group = "hep.dataforge"
-    version = "0.1.1-dev-1"
+    version = "0.1.1-dev-2"
 }
 
 if (file("artifactory.gradle").exists()) {

dataforge-data/src/commonMain/kotlin/hep/dataforge/data/Goal.kt

@@ -63,13 +63,14 @@ private class StaticGoalImpl<T>(val context: CoroutineContext, deferred: Complet
     override val totalWork: Double get() = 0.0
     override val workDone: Double get() = 0.0
     override val coroutineContext: CoroutineContext get() = context
-
 }
 
 
 /**
  * Create a new [Goal] with given [dependencies] and execution [block]. The block takes monitor as parameter.
  * The goal block runs in a supervised scope, meaning that when it fails, it won't affect external scope.
+ *
+ * **Important:** Unlike regular deferred, the [Goal] is started lazily, so the actual calculation is called only when result is requested.
  */
 fun <R> CoroutineScope.createGoal(dependencies: Collection<Goal<*>>, block: suspend GoalMonitor.() -> R): Goal<R> {
     val monitor = GoalMonitor()

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Output.kt

@@ -1,13 +1,8 @@
 package hep.dataforge.io
 
-import hep.dataforge.context.Context
 import hep.dataforge.context.ContextAware
 import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.launch
-import kotlin.reflect.KClass
 
 /**
  * A generic way to render any object in the output.