Added a unit test for the amalgamate_data that looks at both delimiter options.  There was no test for amalgamate data before, but it was probably being tested implicitly in the export tests.
Added a unit test for the amalgamate_data that looks at both delimiter options.  There was no test for amalgamate data before, but it was probably being tested implicitly in the export tests.

TomTranter/OpenPNM,stadelmanma/OpenPNM,PMEAL/OpenPNM