Added DateTimeNormalizer, use W3C format for DateTime Form elements
Remove unused use statement
Implement feedback
Fixes
Implementing and re-utilizing an abstract aggregate listener

as of zendframework/zf2#3874
Added CollectionInputFilter
Implement feedback
Merge pull request #3632 from davidwindell/zf3617

New DateTimeFormatter Filter (#3617)
Merge pull request #3879 from davidwindell/feature-collection-input-filter

Feature CollectionInputFilter
Reverting the naming from 'callbacks' to 'listeners' for callback handlers in aggregates
Merge pull request #3876 from Ocramius/feature/abstract-aggregate-listener

Implementing and re-utilizing an abstract aggregate listener