Add transformer objects support

[DivineOmega]

This PR will add support for transformer objects. These will replace the dataItemManipulator and dataRowManipulator methods.

[coveralls]

Pull Request Test Coverage Report for Build 190

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.2%) to 88.235%

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Totals
Change from base Build 184:	-0.2%
Covered Lines:	645
Relevant Lines:	731

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💛 - Coveralls