Work to add C style entry points to library that allow most functionality

src/Evaluator/Evaluator.hpp

@@ -15,6 +15,7 @@ using namespace std;
 
 class Evaluator {
     shared_ptr<EvalValue> _result;
+    shared_ptr<EvalValue> _lastValue;
 
     Script* _scriptData;
     EvaluationScope* _evaluationScope;
@@ -57,7 +58,9 @@ public:
         return _evaluationScope;
     }
 
-
+    EvalValue* GetLastValue(){
+        return _lastValue.get();
+    }
 };