:mega: :mega: :mega: `kotlinx.coroutines` 1.2.0-al...

# coroutines

[Vsevolod Tolstopyatov [JB]]

📣 📣 📣 kotlinx.coroutines 1.2.0-alpha is here!

This is an alpha version of the major release with a lot of improvements in debuggability, diagnostics and performance.

Changelog:
* Debug agent now merges real stacktraces with coroutine stacktraces, its API is cleaned up and debug agent is on its road to stabilization
* CoroutineTimeout test rule for JUnit4 to simplify testing and debugging with coroutines
* Futures are now integrated with structured concurrency
* Dispatchers.Unconfined, MainCoroutineDispatcher.immediate, MainScope and CoroutineScope.cancel are promoted to stable API
* CompletableJob is introduced, Job() and SupervisorJob() are now completable
* ensurePresent and isPresent extensions for ThreadLocal
* ensureActive extensions for CoroutineContext, CoroutineScope and Job
* Operator invoke on CoroutineDispatcher

...and a lot more, full changelog: https://github.com/Kotlin/kotlinx.coroutines/releases/tag/1.2.0-alpha

[damian]

I think the link for Structured concurrency is integrated into futures and listenable futures is wrong - it goes to https://github.com/Kotlin/kotlinx.coroutines/issues/1008

[Vsevolod Tolstopyatov [JB]]

Thanks! Off-by-one errors 🙂 It was #1007

[pakoito]

congrats on the new release!

[Slava Glushenkov]

Empty Android project with implementation 'org.jetbrains.kotlinxkotlinx coroutines core1.2.0-alpha'
Execution failed for task 'apptransformResourcesWithMergeJavaResForDebug'.

More than one file was found with OS independent path 'META-INF/atomicfu.kotlin_module' when build project.

[r4zzz4k]

@Slava Glushenkov you can safely add the following to your Android app build.gradle:

android {
    ...
    packagingOptions {
            ...
            exclude 'META-INF/*.kotlin_module'
    }
}

These files are needed when you consume Kotlin library, but there's no need for them in final APK file.

[Slava Glushenkov]

Thnx. It works.