Enable test to accept arrays, add ensure
Updated cell spec for new code
Update cell growth spec
Update Cell Growth module
Update DNA spec
Update DNA module
Update ensure method of Base Module
Update Lipid spec
Update Lipid module
Update Metabolism spec
Update Metabolism module
Update Protein spec
Update Protein module
Update Metabolite spec

Replaces Substrate spec
Update Metabolite module

Replaces Substrate module
Update DNA spec again
Update cell spec again
Update Transporter spec
Update Transporter module
Cell update and compliant new spec/modules