Added column splitter and boolean validator.
Added splitter, repeater and combiner tests
duplicate check generation appears to be working, still need to write a good test case for it
hack to make asserts with messages work in php 5.3 and earlier.
speed improvements for date parsing
API change in 5.5 no run-time passing of parameters.
insert sql geeration
small change to make tests work with new date parsing
small change to get rid of warning with method overloading.