Published 2 Apr 2021

• Upgraded to coroutines 1.4.3 (KTOR-2254)
• Upgraded kotlinx.serialization to 1.1.0 (KTOR-2238)
• Fixed I/O readRemaining sometimes looses exception (KTOR-2263)
• Fixed autoreload with 1.5.x when using embeddedServer NOT in debug mode regression (KTOR-2214)
• Fixed flaky CIOSustainabilityTest.testBlockingConcurrency[jvm] (KTOR-2265)
• Resolve 'node-fetch' on libs produced by jsBrowserProductionLibraryDistribution regression (KTOR-2230)
• Updated doc string for FormPart (KTOR-2173)
• Fixed java.lang.IllegalStateException: No instance for key AttributeKey: ExpectSuccessAttribyteKey regression (KTOR-2389)
• Supported overriding Kotlin module configuration using jackson dsl function (KTOR-1692)
• Fixed CORS can't pass on some none standard orgin on jvm (KTOR-469)
• Fixed unexpected exception when using Session feature: "Using blocking primitives on this dispatcher is not allowed" regression jvm (KTOR-1452)
• Fixed NettyApplicationEngine providing a configureBootstrap in the configuration throws IllegalStateException: group set already (KTOR-2078)
• Fixed wrong indentation in Serving Static Content guide (KTOR-2017)
• Fixed InsufficientSpaceException trying to build ByteReadPacket jvm (KTOR-960)
• Fixed flaky ProxyTest.testHttpProxy[CIO][jvm] (KTOR-2082)
• Fixed invalid assertion for existence of the key in the key store (KTOR-2311)
• Fixed incorrect grammar in exception messages (KTOR-2284)
• Fixed flaky JavaEngineTests.testThreadLeak[jvm] (KTOR-2098)
• Fixed flaky JettyStressTest.highLoadStressTest (KTOR-2080)
• Fixed flaky ExceptionsJvmTest.testConnectionClosedDuringRequest[jvm] (KTOR-2063)