fix HeadLink docblock method declaration hints
Add fail test case
Fix delegators property
Fix delegators usage
Add tests case for the zend\servicemanager\config extension
update inheritance of service manager config
Merge branch 'cs/#6038-headlink-docblock-optional-params-hinting'

Type-hints as of phpDocumentor/phpDocumentor2#1194

Close #6038
Digit filter should not touch boolean
Early return for int values which are always just digits
Merge branch 'hotfix/#6277-digit-filter-should-ignore-booleans-backport'

Close #6277
#6266 - removing unused imports
#6266 - CS - alignment of braces/array syntax in closure definitions
#6266 - CS - docblock empty lines
#6266 - Initializers should also be registered locally
#6266 - Service manager aliases should be stored locally
#6266 - Optimized and named the `EventManagerAwareInitializer`
#6266 - Optimized and named the `ServiceManagerAwareInitializer`
#6266 - Optimized and named the `ServiceLocatorAwareInitializer`
#6266 - Moved the alias for the `ServiceManager` to its own factory (allows for overrides)
#6266 - Using `ArrayUtils::merge()` for merging constructor parameters