Update Kotlin to 1.6.0 (#3027)

* Update Kotlin to 1.6.0
* Update atomicfu to 0.17.0

Author: qwwdfsad

README.md

@@ -3,11 +3,11 @@
 [![official JetBrains 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)](https://www.apache.org/licenses/LICENSE-2.0)
 [![Download](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.5.2)](https://search.maven.org/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.5.2/pom)
-[![Kotlin](https://img.shields.io/badge/kotlin-1.5.30-blue.svg?logo=kotlin)](http://kotlinlang.org)
+[![Kotlin](https://img.shields.io/badge/kotlin-1.6.0-blue.svg?logo=kotlin)](http://kotlinlang.org)
 [![Slack channel](https://img.shields.io/badge/chat-slack-green.svg?logo=slack)](https://kotlinlang.slack.com/messages/coroutines/)
 
 Library support for Kotlin coroutines with [multiplatform](#multiplatform) support.
-This is a companion version for the Kotlin `1.5.30` release.
+This is a companion version for the Kotlin `1.6.0` release.
 
 ```kotlin
 suspend fun main() = coroutineScope {
@@ -91,7 +91,7 @@ And make sure that you use the latest Kotlin version:
 
 ```xml
 <properties>
-    <kotlin.version>1.5.30</kotlin.version>
+    <kotlin.version>1.6.0</kotlin.version>
 </properties>
 ```
 
@@ -109,7 +109,7 @@ And make sure that you use the latest Kotlin version:
 
 ```groovy
 buildscript {
-    ext.kotlin_version = '1.5.30'
+    ext.kotlin_version = '1.6.0'
 }
 ```
 

gradle.properties

@@ -5,12 +5,12 @@
 # Kotlin
 version=1.5.2-SNAPSHOT
 group=org.jetbrains.kotlinx
-kotlin_version=1.6.0-RC2
+kotlin_version=1.6.0
 
 # Dependencies
 junit_version=4.12
 junit5_version=5.7.0
-atomicfu_version=0.16.3
+atomicfu_version=0.17.0
 knit_version=0.3.0
 html_version=0.7.2
 lincheck_version=2.14

reactive/kotlinx-coroutines-reactive/test/PublishTest.kt

@@ -282,8 +282,6 @@ class PublishTest : TestBase() {
         val publisher = publish {
             assertFailsWith<NullPointerException> { send(null) }
             assertFailsWith<NullPointerException> { trySend(null) }
-            @Suppress("DEPRECATION")
-            assertFailsWith<NullPointerException> { offer(null) }
             send("OK")
         }
         assertEquals("OK", publisher.awaitFirstOrNull())

reactive/kotlinx-coroutines-reactor/test/FluxTest.kt

@@ -170,10 +170,8 @@ class FluxTest : TestBase() {
         val flux = flux {
             assertFailsWith<NullPointerException> { send(null) }
             assertFailsWith<NullPointerException> { trySend(null) }
-            @Suppress("DEPRECATION")
-            assertFailsWith<NullPointerException> { offer(null) }
             send("OK")
         }
         assertEquals("OK", flux.awaitFirstOrNull())
     }
-}
+}