JIRA: https://jira.spring.io/browse/INT-3528
Use `min` and `max` methods instead of sorting an entire collection to get the minimum or maximum element.
Change other inline `Comparator<?>`s to the `final` fields
Conflicts:
spring-integration-core/src/main/java/org/springframework/integration/aggregator/AbstractCorrelatingMessageHandler.java
Conflicts:
spring-integration-core/src/main/java/org/springframework/integration/aggregator/AbstractCorrelatingMessageHandler.java
spring-integration-core/src/main/java/org/springframework/integration/aggregator/SequenceSizeReleaseStrategy.java
spring-integration-core/src/main/java/org/springframework/integration/config/GlobalChannelInterceptorProcessor.java
spring-integration-redis/src/main/java/org/springframework/integration/redis/store/RedisChannelPriorityMessageStore.java
d7691e78f3