changed test names to match other tests of the same data type
moved test_last_name to be grouped with other last names
moved find_merchant to be grouped with other find_merchant methods
Added methods for find by result. Moved some tests around to match style used in other tests
moved random to match style of other classes
added some missing tests and methods for extracting data. moved methods to match style of other tests and classes
Merge pull request #42 from trayo/40_data_class_style_update

Closes #40 data class style update