Merge branch 'hotfix/#6303-fix-#5144-ttl-tests-stability'

Close #6303
Close #5144
Merge branch 'hotfix/#6266-delegator-support-in-mvc-service-config'

Close #6266
Fixes typo
Merge branch 'typo/#6325-session-exception-typo'

Close #6325
Create failing test for merging allowEmpty
Fix merging of allowEmpty flag
Merge branch 'DASPRiD-bugfix/merging-inputs-with-allow-empty'
Bump version to 2.4.0dev
Fixes #6063
incorporate feedback : patch use Exception, exception message, and @throws docblock
Use AuthenticationServiceInterface as type
Update exception message with Interfacename
Add autoEscape option to FlashMessenger
Added tests for autoEscape via render()
Fixed error in test
Added third parameter to render() whether to use autoEscape
Updated render() docblock with the third parameter
Fixed rebase conflicts, added same functionality to renderCurrent and added tests
Zend\Loader\ClassMapAutoloader - Performance improvement #5716
Added map naming strategy for hydrator