Added core file around BioInterchange, which is currently empty. But it sets the namespace for unit tests that otherwise would not run.
Added core file around BioInterchange, which is currently empty. But it sets the namespace for unit tests that otherwise would not run.

BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange