Restructure include files.

This way main.o is much faster to compile, leaving Simulator.o the only
file that really takes time.

src/Simulator.hpp

@@ -4,14 +4,18 @@
 #include <memory>
 #include <vector>
 
-#include <caffe/caffe.hpp>
-#include <opencv2/core/core.hpp>
-#include <opencv2/highgui/highgui.hpp>
-#include <opencv2/imgproc/imgproc.hpp>
+#include <opencv2/core/types.hpp>
+#include <opencv2/core/mat.hpp>
 
 #include "utils.hpp"
 #include "LayerData.hpp"
 
+namespace caffe
+{
+    template<class DType>
+    class Net;
+}
+
 namespace fmri {
     using std::string;
     using std::vector;
@@ -19,11 +23,12 @@ namespace fmri {
     class Simulator {
     public:
         Simulator(const string &model_file, const string &weights_file, const string &means_file = "");
+        ~Simulator();
 
         vector<LayerData> simulate(const string &input_file);
 
     private:
-        caffe::Net<DType> net;
+        std::unique_ptr<caffe::Net<DType>> net;
         cv::Size input_geometry;
         cv::Mat means;
         unsigned int num_channels;