Update Kotlin to 1.9.20

README.md

@@ -3,7 +3,7 @@
 [![Maven Central](https://img.shields.io/maven-central/v/com.benwoodworth.parameterize/parameterize)](https://search.maven.org/search?q=g:com.benwoodworth.parameterize)
 [![Sonatype Nexus (Snapshots)](https://img.shields.io/nexus/s/com.benwoodworth.parameterize/parameterize?server=https%3A%2F%2Fs01.oss.sonatype.org)](https://s01.oss.sonatype.org/content/repositories/snapshots/com/benwoodworth/parameterize/)
 [![KDoc](https://img.shields.io/badge/api-KDoc-blue)](https://benwoodworth.github.io/parameterize)
-[![Kotlin](https://img.shields.io/badge/kotlin-1.9.0-blue.svg?logo=kotlin)](http://kotlinlang.org)
+[![Kotlin](https://img.shields.io/badge/kotlin-1.9.20-blue.svg?logo=kotlin)](http://kotlinlang.org)
 [![Slack channel](https://img.shields.io/badge/chat-slack-blue.svg?logo=slack)](https://kotlinlang.slack.com/messages/parameterize/)
 
 Parameterize is a multiplatform Kotlin library that brings a concise syntax for parameterizing code.
@@ -89,7 +89,7 @@ fun int_should_not_equal_a_different_int() = parameterize {
 // build.gradle.kts
 
 plugins {
-    kotlin("jvm") version "1.9.10" // or kotlin("multiplatform"), etc.
+    kotlin("jvm") version "1.9.20" // or kotlin("multiplatform"), etc.
 }
 
 repositories {

build.gradle.kts

@@ -1,20 +1,17 @@
 import org.gradle.kotlin.dsl.support.uppercaseFirstChar
-import org.jetbrains.kotlin.gradle.ExperimentalKotlinGradlePluginApi
 import org.jetbrains.kotlin.gradle.plugin.KotlinTargetWithTests
 
 plugins {
-    kotlin("multiplatform") version "1.9.0"
+    kotlin("multiplatform") version "1.9.20"
     id("parameterize.library-conventions")
 }
 
 repositories {
     mavenCentral()
 }
 
-@OptIn(ExperimentalKotlinGradlePluginApi::class)
 kotlin {
     explicitApi()
-    targetHierarchy.default()
 
     jvm {
         compilations.all {
@@ -50,6 +47,16 @@ kotlin {
     watchosDeviceArm64()
     mingwX64()
 
+    targets.configureEach {
+        compilations.configureEach {
+            compilerOptions.configure {
+                if (name == "test") {
+                    freeCompilerArgs.add("-Xexpect-actual-classes")
+                }
+            }
+        }
+    }
+
     sourceSets {
         all {
             languageSettings.optIn("kotlin.contracts.ExperimentalContracts")