1.9.0

Features

• Wasm/WASI target support (#4064). Thanks, @igoriakovlev!
• limitedParallelism now optionally accepts the name of the dispatcher view for easier debugging (#4023).
• No longer initialize Dispatchers.IO on the JVM when other standard dispatchers are accessed (#4166). Thanks, @metalhead8816!
• Introduced the Flow<T>.chunked(size: Int): Flow<List<T>> operator that groups emitted values into groups of the given size (#1290).
• Closeable dispatchers are instances of AutoCloseable now (#4123).

Fixes

• Calling hasNext on a Channel's iterator is idempotent (#4065). Thanks, @gitpaxultek!
• CoroutineScope() created without an explicit dispatcher uses Dispatchers.Default on Native (#4074). Thanks, @whyoleg!
• Fixed a bug that prevented non-Android Dispatchers.Main from initializing when the Firebase dependency is used (#3914).
• Ensured a more intuitive ordering of tasks in runBlocking (#4134).
• Forbid casting a Mutex to Semaphore (#4176).
• Worked around a stack overflow that may occur when calling asDeferred on a Future many times (#4156).

Deprecations and promotions

• Advanced the deprecation levels for BroadcastChannel-based API (#4197).
• Advanced the deprecation levels for the old kotlinx-coroutines-test API (#4198).
• Deprecated Job.cancelFutureOnCompletion (#4173).
• Promoted CoroutineDispatcher.limitedParallelism to stable (#3864).
• Promoted CoroutineStart.ATOMIC from ExperimentalCoroutinesApi to DelicateCoroutinesApi (#4169).
• Promoted CancellableContinuation.resume with an onCancellation lambda to stable, providing extra arguments to the lambda (#4088).
• Marked the classes and interfaces that are not supposed to be inherited from with the new InternalForInheritanceCoroutinesApi opt-in (#3770).
• Marked the classes and interfaces inheriting from which is not stable with the new ExperimentalForInheritanceCoroutinesApi opt-in (#3770).

Other

• Kotlin was updated to 2.0 (#4137).
• Reworked the documentation for CoroutineStart and Channel-based API (#4147, #4148, #4167). Thanks, @globsterg!
• Simplified the internal implementation of Job (#4053).
• Small tweaks, fixes, and documentation improvements.