Update BioFVM_basic_agent.cpp

Changed defaults in BioFVM Basic Agents so that cells ingest not just cell volume, but also internalized substrates by default.

This is in response to Issue #307

BioFVM/BioFVM_basic_agent.cpp

@@ -78,7 +78,7 @@ Basic_Agent::Basic_Agent()
 
 	internalized_substrates = new std::vector<double>(0); // 
 	fraction_released_at_death = new std::vector<double>(0); 
-	fraction_transferred_when_ingested = new std::vector<double>(0); 
+	fraction_transferred_when_ingested = new std::vector<double>(1.0); 
 	register_microenvironment( get_default_microenvironment() );
 
 	// these are done in register_microenvironment
@@ -190,7 +190,7 @@ void Basic_Agent::register_microenvironment( Microenvironment* microenvironment_
 	total_extracellular_substrate_change.resize( microenvironment->density_vector(0).size() , 1.0 );
 
 	fraction_released_at_death->resize( microenvironment->density_vector(0).size() , 0.0 ); 
-	fraction_transferred_when_ingested->resize( microenvironment->density_vector(0).size() , 0.0 ); 
+	fraction_transferred_when_ingested->resize( microenvironment->density_vector(0).size() , 1.0 ); 
 
 	return; 
 }