Prepare 1.8.1 release (#2965)

Author: sandwwraith

CHANGELOG.md

@@ -1,3 +1,21 @@
+1.8.1 / 2025-03-31
+==================
+
+This release updates Kotlin version to 2.1.20, while also providing several important improvements
+and bugfixes.
+
+## Improvements
+  * Implemented encoding null in key and value of a map in Protobuf (#2910)
+  * Make type argument in JsonTransformingSerializer nullable (#2911)
+  * Use SPDX identifier in POMs (#2936) (thanks to [Leon Linhart](https://github.com/TheMrMilchmann))
+  * Add watchosDeviceArm64 to Okio integration module (#2920) (thanks to [Daniel Santiago](https://github.com/danysantiago))
+  * Update kotlinx-io version to 0.6.0 (#2933) (thanks to [Piotr Krzemiński](https://github.com/krzema12))
+
+## Bugfixes
+  * Fix incorrect enum coercion during deserialization from JsonElement (#2962)
+  * Supply proper equals(), hashCode(), and toString() for SerialDescriptor() wrapper (#2942)
+  * Do not encode empty packed collections in protobuf (#2907)
+
 1.8.0 / 2025-01-06
 ==================
 

README.md

@@ -4,8 +4,8 @@
 [![JetBrains official project](https://jb.gg/badges/official.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
 [![GitHub license](https://img.shields.io/badge/license-Apache%20License%202.0-blue.svg?style=flat)](http://www.apache.org/licenses/LICENSE-2.0)
 [![TeamCity build](https://img.shields.io/teamcity/http/teamcity.jetbrains.com/s/KotlinTools_KotlinxSerialization_Ko.svg)](https://teamcity.jetbrains.com/viewType.html?buildTypeId=KotlinTools_KotlinxSerialization_Ko&guest=1)
-[![Kotlin](https://img.shields.io/badge/kotlin-2.1.0-blue.svg?logo=kotlin)](http://kotlinlang.org)
-[![Maven Central](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/kotlinx-serialization-core/1.8.0)](https://central.sonatype.com/artifact/org.jetbrains.kotlinx/kotlinx-serialization-core/1.8.0)
+[![Kotlin](https://img.shields.io/badge/kotlin-2.1.20-blue.svg?logo=kotlin)](http://kotlinlang.org)
+[![Maven Central](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/kotlinx-serialization-core/1.8.1)](https://central.sonatype.com/artifact/org.jetbrains.kotlinx/kotlinx-serialization-core/1.8.1)
 [![KDoc link](https://img.shields.io/badge/API_reference-KDoc-blue)](https://kotlinlang.org/api/kotlinx.serialization/)
 [![Slack channel](https://img.shields.io/badge/chat-slack-blue.svg?logo=slack)](https://kotlinlang.slack.com/messages/serialization/)
 
@@ -94,17 +94,17 @@ Kotlin DSL:
 
 ```kotlin
 plugins {
-    kotlin("jvm") version "2.1.0" // or kotlin("multiplatform") or any other kotlin plugin
-    kotlin("plugin.serialization") version "2.1.0"
+    kotlin("jvm") version "2.1.20" // or kotlin("multiplatform") or any other kotlin plugin
+    kotlin("plugin.serialization") version "2.1.20"
 }
 ```       
 
 Groovy DSL:
 
 ```gradle
 plugins {
-    id 'org.jetbrains.kotlin.multiplatform' version '2.1.0'
-    id 'org.jetbrains.kotlin.plugin.serialization' version '2.1.0'
+    id 'org.jetbrains.kotlin.multiplatform' version '2.1.20'
+    id 'org.jetbrains.kotlin.plugin.serialization' version '2.1.20'
 }
 ```
 
@@ -122,7 +122,7 @@ buildscript {
     repositories { mavenCentral() }
 
     dependencies {
-        val kotlinVersion = "2.1.0"
+        val kotlinVersion = "2.1.20"
         classpath(kotlin("gradle-plugin", version = kotlinVersion))
         classpath(kotlin("serialization", version = kotlinVersion))
     }
@@ -133,7 +133,7 @@ Groovy DSL:
 
 ```gradle
 buildscript {
-    ext.kotlin_version = '2.1.0'
+    ext.kotlin_version = '2.1.20'
     repositories { mavenCentral() }
 
     dependencies {
@@ -163,7 +163,7 @@ repositories {
 }
 
 dependencies {
-    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.0")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.1")
 }
 ```
 
@@ -175,7 +175,7 @@ repositories {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.0"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.1"
 }
 ```
 
@@ -265,8 +265,8 @@ Ensure the proper version of Kotlin and serialization version:
 
 ```xml
 <properties>
-    <kotlin.version>2.1.0</kotlin.version>
-    <serialization.version>1.8.0</serialization.version>
+    <kotlin.version>2.1.20</kotlin.version>
+    <serialization.version>1.8.1</serialization.version>
 </properties>
 ```
 

gradle.properties

@@ -3,7 +3,7 @@
 #
 
 group=org.jetbrains.kotlinx
-version=1.8.1-SNAPSHOT
+version=1.8.2-SNAPSHOT
 jdk_toolchain_version=11
 
 # This version takes precedence if 'bootstrap' property passed to project

integration-test/gradle.properties

@@ -3,7 +3,7 @@
 #
 
 mainKotlinVersion=2.1.20
-mainLibVersion=1.8.1-SNAPSHOT
+mainLibVersion=1.8.2-SNAPSHOT
 
 kotlin.code.style=official