Updated release notes for 1.5.0

RELEASENOTES.adoc

@@ -299,7 +299,7 @@ NOTE: Breaking changes:
 === Version 1.3.1
 * Issue #596: Fixed a bug that a fallback method is not invoked when using CompletableFutures and a ThreadPoolBulkhead annotation
 
-=== Version 1.4.0
+== Version 1.4.0
 * Issue #703: Add a feature that allows to plug-in your own Registry implementation which can be based on a cache library if needed.
 * Issue #737: Updated reactor version to 3.3.0.RELEASE
 * Issue #933: Add RegistryStore and builder methods to create BulkheadRegistry and ThreadPoolBulkheadRegistry
@@ -314,3 +314,12 @@ NOTE: Breaking changes:
 * Issue #958: Added missing method to set contextProgagators in ThreadPoolBulkheadConfigurationProperties
 * PR #914: Adding non-coroutine kotlin wrapper functions as a convenience
 * PR #943: Removed deprecated documentation
+
+== Version 1.5.0
+* Issue #942: Introduced new CB metric "notPermittedCalls"
+* Issue #964: Added Kotlin DSL for building *Config and *Registry classes
+* Issue #979: Added fairCallHandlingEnabled flag to BulkheadConfig which controls whether FairSync or NonfairSync should be used in the Semaphore.
+* Issue #982: Added support to configure exponential random backoff via Spring config
+* Issue #991: Fixed bug that auto transition to half_open happens even if the state is forced open.
+* Issue #1000: Added toString to CircuitBreakerConfig
+* Issue #1003: Fixed bug that CircuitBreaker tries to obtain permission twice in circuitBreaker.decorateEitherSupplier()