Merge branch 'master' into develop

# Conflicts:
#	README.md
#	gradle.properties

Author: qwwdfsad

CHANGES.md

@@ -20,12 +20,11 @@
 
 * Fixed the problem that prevented implementation via delegation for `Job` interface (#2423)
 * Fixed incorrect ProGuard rules that allowed shrinking volatile felds (#1564)
-* Fixed `await/`asDeferred` for `MinimalState` implementations in jdk8 module (#2456)
+* Fixed `await`/`asDeferred` for `MinimalStage` implementations in jdk8 module (#2456)
 * Fixed bug when `onUndeliveredElement` wasn't called for unlimited channels (#2435)
 * Fixed a bug when `ListenableFuture.isCancelled` returned from `asListenableFuture` could have thrown an exception, thanks to @vadimsemenov (#2421)
 * Coroutine in `callbackFlow` and `produce` is properly cancelled when the channel was closed separately (#2506)
 
-
 ## Version 1.4.2
 
 * Fixed `StackOverflowError` in `Job.toString` when `Job` is observed in its intermediate state (#2371).

README.md

@@ -2,12 +2,12 @@
 
 [![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://api.bintray.com/packages/kotlin/kotlinx/kotlinx.coroutines/images/download.svg?version=1.4.3) ](https://bintray.com/kotlin/kotlinx/kotlinx.coroutines/1.4.3)
+[![Download](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.4.3)](https://search.maven.org/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.4.3/pom)
 [![Kotlin](https://img.shields.io/badge/kotlin-1.4.30-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 Kotlin `1.4.30` release.
+This is a companion version for the Kotlin `1.4.30` release.
 
 ```kotlin
 suspend fun main() = coroutineScope {
@@ -144,16 +144,16 @@ Make sure that you have `mavenCentral()` in the list of repositories.
 ### Android
 
 Add [`kotlinx-coroutines-android`](ui/kotlinx-coroutines-android)
-module as dependency when using `kotlinx.coroutines` on Android:
+module as a dependency when using `kotlinx.coroutines` on Android:
 
 ```groovy
 implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.3'
 ```
 
-This gives you access to Android [Dispatchers.Main]
-coroutine dispatcher and also makes sure that in case of crashed coroutine with unhandled exception this
-exception is logged before crashing Android application, similarly to the way uncaught exceptions in
-threads are handled by Android runtime.
+This gives you access to the Android [Dispatchers.Main]
+coroutine dispatcher and also makes sure that in case of a crashed coroutine with an unhandled exception that
+this exception is logged before crashing the Android application, similarly to the way uncaught exceptions in
+threads are handled by the Android runtime.
 
 #### R8 and ProGuard
 
@@ -164,7 +164,7 @@ For more details see ["Optimization" section for Android](ui/kotlinx-coroutines-
 
 The `kotlinx-coroutines-core` artifact contains a resource file that is not required for the coroutines to operate
 normally and is only used by the debugger. To exclude it at no loss of functionality, add the following snippet to the
-`android` block in your gradle file for the application subproject:
+`android` block in your Gradle file for the application subproject:
 ```groovy
 packagingOptions {
   exclude "DebugProbesKt.bin"
@@ -176,7 +176,7 @@ packagingOptions {
 Core modules of `kotlinx.coroutines` are also available for 
 [Kotlin/JS](https://kotlinlang.org/docs/reference/js-overview.html) and [Kotlin/Native](https://kotlinlang.org/docs/reference/native-overview.html).
 
-In common code that should get compiled for different platforms, you can add dependency to `kotlinx-coroutines-core` right to the `commonMain` source set:
+In common code that should get compiled for different platforms, you can add a dependency to `kotlinx-coroutines-core` right to the `commonMain` source set:
 ```groovy
 commonMain {
     dependencies {
@@ -185,7 +185,7 @@ commonMain {
 }
 ```
 
-No more additional dependencies is needed, platform-specific artifacts will be resolved automatically via Gradle metadata available since Gradle 5.3.
+No more additional dependencies are needed, platform-specific artifacts will be resolved automatically via Gradle metadata available since Gradle 5.3.
 
 Platform-specific dependencies are recommended to be used only for non-multiplatform projects that are compiled only for target platform.
 
@@ -203,11 +203,11 @@ the target Kotlin/Native platform. [List of currently supported targets](https:/
 
 
 Only single-threaded code (JS-style) on Kotlin/Native is supported in stable versions.
-Additionally, special `-native-mt` version is released on a regular basis, for the state of multi-threaded coroutines support
+Additionally, a special `-native-mt` version is released on a regular basis, for the state of multi-threaded coroutines support
 please follow the [corresponding issue](https://github.com/Kotlin/kotlinx.coroutines/issues/462) for the additional details.
 
 Since Kotlin/Native does not generally provide binary compatibility between versions, 
-you should use the same version of Kotlin/Native compiler as was used to build `kotlinx.coroutines`. 
+you should use the same version of the Kotlin/Native compiler as was used to build `kotlinx.coroutines`. 
 
 ## Building and Contributing
 

RELEASE.md

@@ -34,7 +34,7 @@ To release new `<version>` of `kotlinx-coroutines`:
 7. Commit updated files to a new version branch:<br>
    `git commit -a -m "Version <version>"`
 
-8. Push new version into the branch:<br>
+8. Push the new version into the branch:<br>
    `git push -u origin version-<version>`
 
 9. Create Pull-Request on GitHub from `version-<version>` branch into `master`:

docs/topics/debug-coroutines-with-idea.md

@@ -21,7 +21,7 @@ The tutorial assumes you have prior knowledge of the [coroutines](coroutines-gui
     * Use the [`runBlocking()`](https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/run-blocking.html) block to wrap a coroutine.
     * Use the [`async()`](https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/async.html) function to create coroutines that compute deferred values `a` and `b`.
     * Use the [`await()`](https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/-deferred/await.html) function to await the computation result.
-    * Use the [`println()`](https://kotlinlang.org//api/latest/jvm/stdlib/stdlib/kotlin.io/println.html) function to print computing status and the result of multiplication to the output.
+    * Use the [`println()`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.io/println.html) function to print computing status and the result of multiplication to the output.
 
     ```kotlin
     import kotlinx.coroutines.*
@@ -79,4 +79,4 @@ The tutorial assumes you have prior knowledge of the [coroutines](coroutines-gui
     * The second coroutine has computed its value and disappeared.
     * The third coroutine is calculating the value of `b` – it has the **RUNNING** status.
 
-Using IntelliJ IDEA debugger, you can dig deeper into each coroutine to debug your code.
+Using IntelliJ IDEA debugger, you can dig deeper into each coroutine to debug your code.

kotlinx-coroutines-core/common/src/flow/StateFlow.kt

@@ -21,7 +21,7 @@ import kotlin.native.concurrent.*
  * neither does a coroutine started by the [Flow.launchIn] function. An active collector of a state flow is called a _subscriber_.
  *
  * A [mutable state flow][MutableStateFlow] is created using `MutableStateFlow(value)` constructor function with
- * the initial value. The value of mutable state flow can be  updated by setting its [value] property.
+ * the initial value. The value of mutable state flow can be updated by setting its [value] property.
  * Updates to the [value] are always [conflated][Flow.conflate]. So a slow collector skips fast updates,
  * but always collects the most recently emitted value.
  *

site/deploy.sh

@@ -1,5 +1,9 @@
 #!/usr/bin/env bash
 
+#
+# Copyright 2016-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+#
+
 # Abort on first error
 set -e
 
@@ -47,7 +51,8 @@ git rm `find . -type f -not -name '*.html' -not -name '.git'` > /dev/null
 echo "Redirecting experimental pages"
 git_add=()
 git_rm=()
-for file in `find . -type f -name '*.html'` ; do
+`find . -type f -name '*.html'` | while read file
+do
     match=nothing_is_found
     if [[ $file =~ \.experimental ]] ; then
         match="${file//\.experimental/}"