First try was way to simple on the approach
remove functionality added to the queue iterator. fixes #2483
fixes #2746 in maintenance-3.x
Merge pull request #2928 from mesutcelik/fix/3.2/2746

Data Loss Bugfix in maintenance-3.x
version check update
fixes #2570
backward compatibility
removed MapConfig reference from MapProxySupport, now when it needs a MapConfig it retrieves from the MapContainer, fixes #2810
Merge pull request #2935 from eminn/fix/mapconfig-update-maintenance

[backport] removed MapConfig reference from MapProxySupport, now when it needs a Ma...
added iteration doc for collections
Merge pull request #2932 from gurbuzali/ra-fix-maintenance

fixes #2570
enhanced
Merge pull request #2926 from eminn/fix/queue/iterator-maintenance

[backport] remove functionality added to the queue iterator. fixes #2483
Merge pull request #2939 from gurbuzali/collection-iterating-document-maintenance

added iteration doc for collections
fixes#2614 for maintenance-3.x
Merge pull request #2945 from hasancelik/fixes#2614-maintenance-3.x

fixes #2614 for maintenance-3.x
added event creation and filtering mechanism
Merge branch 'maintenance-3.x' of github.com:hazelcast/hazelcast into maintenance-3.x
Merge pull request #2904 from noctarius/maintenance-build-utils-fix

Build-Utils improvements (maintenance)
remove unneccessary calls to getMapConfig() within the same method