[MIE-1537] Add onCollectionAddCallback to stream
Merge branch 'develop' into feature/MIE-1537
Avoid duplicated bindings
Merge pull request #26 from natgeo/feature/MIE-1537

Add new callback, onCollectionAddCallback
Improve binding behavior
bump version
bump version
Merge pull request #28 from natgeo/feature/MIE-1537

Improve binding behavior
Merge pull request #29 from natgeo/develop

Update master with develop