0.5.6 cosmetics and versions upgrade, JVM target to 11 for better android compatibility

build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     kotlin("multiplatform") version "2.0.20"
     id("org.jetbrains.kotlin.plugin.serialization") version "2.0.20"
@@ -6,7 +8,7 @@ plugins {
 }
 
 group = "net.sergeych"
-version = "0.5.6-SNAPSHOT"
+version = "0.5.6"
 
 repositories {
     mavenCentral()
@@ -16,7 +18,11 @@ repositories {
 }
 
 kotlin {
-    jvm()
+    jvm {
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_11
+        }
+    }
     js {
         browser()
         nodejs()