Add ChangeLog for 2.1.0-RC2

Author: woainikk

ChangeLog.md

@@ -1,3 +1,43 @@
+## 2.1.0-RC2
+
+### Compiler
+
+- [`KT-72345`](https://youtrack.jetbrains.com/issue/KT-72345) K2: Method 'get' without `@Override` annotation not called
+- [`KT-73065`](https://youtrack.jetbrains.com/issue/KT-73065) CCE with context receivers
+- [`KT-72996`](https://youtrack.jetbrains.com/issue/KT-72996) false-positive unresolved reference error on an overloaded callable reference in a lambda return position on the left-hand size of an elvis operator
+
+### Compose compiler
+
+- [`CMP-6926`](https://youtrack.jetbrains.com/issue/CMP-6926) iOS compilation failure: Unresolved reference 'copy'
+
+### IR. Inlining
+
+- [`KT-72884`](https://youtrack.jetbrains.com/issue/KT-72884) Internal error in body lowering: IllegalStateException: Can't inline given reference, it should've been lowered
+
+### JavaScript
+
+- [`KT-70533`](https://youtrack.jetbrains.com/issue/KT-70533) KJS: changed string concatenation behavior in 2.0
+- [`KT-14013`](https://youtrack.jetbrains.com/issue/KT-14013) JS toString produces different result for nullable/non-nullable ref to the same array
+- [`KT-43567`](https://youtrack.jetbrains.com/issue/KT-43567) KJS: toString() method and string interpolation of variable produce different code
+- [`KT-72732`](https://youtrack.jetbrains.com/issue/KT-72732) KJS / ES6: "SyntaxError: 'super' keyword unexpected here" with enabled `-Xir-generate-inline-anonymous-functions` and disabled arrow functions
+
+### Klibs
+
+- [`KT-72965`](https://youtrack.jetbrains.com/issue/KT-72965) Ignore subclassOptInRequired constructor warning
+
+### Tools. Compiler Plugins
+
+- [`KT-72804`](https://youtrack.jetbrains.com/issue/KT-72804) Regression in Kotlin 2.1.0: compilation fails when building iOS
+- [`KT-72824`](https://youtrack.jetbrains.com/issue/KT-72824) Kotlin power-assert plugin StringIndexOutOfBoundsException
+
+### Tools. Gradle
+
+- [`KT-47897`](https://youtrack.jetbrains.com/issue/KT-47897) Official Kotlin Gradle plugin api
+- [`KT-58858`](https://youtrack.jetbrains.com/issue/KT-58858) Add KDoc documentation for Kotlin Gradle plugin API
+- [`KT-73076`](https://youtrack.jetbrains.com/issue/KT-73076) Kotlin Gradle Plugin API Reference: adjust settings
+- [`KT-70543`](https://youtrack.jetbrains.com/issue/KT-70543) Gradle: create migration guide for those who are using Kotlin compiler classes indirectly available in buildscripts
+
+
 ## 2.1.0-RC
 
 ### Backend. Wasm