add apache commons-lang3 dependency
DataRow - use apache lang for null aware equals
DataRow - static import of normaliseName for more concise dsl
DataRow - use nested call instead of temp var
DataRow - use apache lang for null aware toString
DataRow - split matches into two methods
DataRow - refactor constructor
Merge pull request #191 from benilovj/datarow-refactoring

Some refactoring of DataRow