v1.5.21 is a patch release. Key changes include:

• KT-47320 "StringConcatException: Mismatched number of concat arguments" String concatenation fails when template contains special character;
• KT-47445 "definitely not null type parameters is only available since language version 1.6" error in cast expression.

v1.5.20 is a patch release. Key changes include:

• KT-43262 No error for Java generic class @NotNull type parameter used in Kotlin with nullable type argument;
• KT-44373 FIR: support error / warning suppression.

v1.5.20-RC is a pre-release release. Key changes include:

• KT-42239 IR: Report compilation error instead of throwing an exception (effectively crash compiler) when some declaration wasn't found while deserialization;
• KT-44373 FIR: support error / warning suppression.

v1.5.20-M1 is a pre-release release. Key changes include:

• KT-45189 Support nullability annotations at module level;
• KT-45525 Allow to omit JvmInline annotation for expect value classes.

v1.5.10 is a patch release. Key changes include:

• KT-41078 Incorrect type substitution in contracts with type parameters;
• KT-44770 JVM / IR: "IllegalArgumentException: Unrecognized Type: [null]" Jackson doesn't recognize type.

v1.5.0 is a minor release. Key changes include:

• KT-42053 Support compiler caches for linux_x64;
• KT-43690 Support compiler caches for ios_arm64.

v1.5.0-RC is a pre-release release. Key changes include:

• KT-28791 Kotlin serialization with inline classes;
• KT-43920 Support loading binary Java annotations on fields.

v1.4.32 is a patch release. Key changes include:

• KT-43824 KtLightClassForSourceDeclaration#isInheritor works in a different way than java implementation;
• KT-45287 LightClasses: KtLightSimpleModifierList is no more a parent of KtLightAnnotationForSourceEntry.

v1.5.0-M2 is a pre-release release. Key changes include:

• KT-30222 Support JVM target version selection in Kotlin bytecode tool window;
• KT-41884 Support 'file' target for JvmSynthetic annotation.

v1.5.0-M1 is a pre-release release. Key changes include:

• KT-42053 Support compiler caches for linux_x64;
• KT-43690 Support compiler caches for ios_arm64.

v1.4.31 is a patch release. Key changes include:

• KT-39776 2020.3+: Unresolved reference to Kotlin stdlib function;
• KT-44845 After update to Kotlin 1.4.30 all external dependencies is unresolved in IDE with kotlin.mpp.enableGranularSourceSetsMetadata=true.

v1.4.30 is a patch release. Key changes include:

• KT-42383 HMPP: Bad IDEA dependencies: Missing dependency from p1:jvmAndAndroid to p2:jvmAndAndroid;
• KT-38772 Native: support non-reified type parameters in typeOf.

v1.4.30-RC is a pre-release release. Key changes include:

• JVM IR backend reaches Beta;
• Inline classes improvements.

v1.5.21 is a patch release. Key changes include:

• KT-47320 "StringConcatException: Mismatched number of concat arguments" String concatenation fails when template contains special character;
• KT-47445 "definitely not null type parameters is only available since language version 1.6" error in cast expression.

v1.5.20 is a patch release. Key changes include:

• KT-43262 No error for Java generic class @NotNull type parameter used in Kotlin with nullable type argument;
• KT-44373 FIR: support error / warning suppression.

v1.5.20-RC is a pre-release release. Key changes include:

• KT-42239 IR: Report compilation error instead of throwing an exception (effectively crash compiler) when some declaration wasn't found while deserialization;
• KT-44373 FIR: support error / warning suppression.

v1.5.20-M1 is a pre-release release. Key changes include:

• KT-45189 Support nullability annotations at module level;
• KT-45525 Allow to omit JvmInline annotation for expect value classes.

v1.5.10 is a patch release. Key changes include:

• KT-41078 Incorrect type substitution in contracts with type parameters;
• KT-44770 JVM / IR: "IllegalArgumentException: Unrecognized Type: [null]" Jackson doesn't recognize type.

v1.5.0 is a minor release. Key changes include:

• KT-42053 Support compiler caches for linux_x64;
• KT-43690 Support compiler caches for ios_arm64.

v1.5.0-RC is a pre-release release. Key changes include:

• KT-28791 Kotlin serialization with inline classes;
• KT-43920 Support loading binary Java annotations on fields.

v1.4.32 is a patch release. Key changes include:

• KT-43824 KtLightClassForSourceDeclaration#isInheritor works in a different way than java implementation;
• KT-45287 LightClasses: KtLightSimpleModifierList is no more a parent of KtLightAnnotationForSourceEntry.

v1.5.0-M2 is a pre-release release. Key changes include:

• KT-30222 Support JVM target version selection in Kotlin bytecode tool window;
• KT-41884 Support 'file' target for JvmSynthetic annotation.

v1.5.0-M1 is a pre-release release. Key changes include:

• KT-42053 Support compiler caches for linux_x64;
• KT-43690 Support compiler caches for ios_arm64.

v1.4.31 is a patch release. Key changes include:

• KT-39776 2020.3+: Unresolved reference to Kotlin stdlib function;
• KT-44845 After update to Kotlin 1.4.30 all external dependencies is unresolved in IDE with kotlin.mpp.enableGranularSourceSetsMetadata=true.

v1.4.30 is a patch release. Key changes include:

• KT-42383 HMPP: Bad IDEA dependencies: Missing dependency from p1:jvmAndAndroid to p2:jvmAndAndroid;
• KT-38772 Native: support non-reified type parameters in typeOf.

v1.4.30-RC is a pre-release release. Key changes include:

• JVM IR backend reaches Beta;
• Inline classes improvements.