prior to comparrison functions
Initial structure for compare TDD
Implements compare unit test SetUp and TearDown for TDD
DataSet::addFile and ::clearSet functions implemented
DataSet constructor with filename now uses addFile
displaySet modified to output a newline at each row end
Adds findHeader function
Implements Item findValue and getData functions and associated tests
Fixes bug in FindDoubleIndexes unit test.
Implements double compare function for use in find function.
Adds double find value function that takes a comparrison function pointer.
Implements dataSet match function.
Fixes declaration error in Item.