Add version number to Network

Remove uneeded console output

src/Network.cc

@@ -100,7 +100,6 @@ namespace bayesnet {
         if (maxThreadsRunning < 1) {
             maxThreadsRunning = 1;
         }
-        cout << "Using " << maxThreadsRunning << " threads" << " maxThreads: " << maxThreads << endl;
         vector<thread> threads;
         mutex mtx;
         condition_variable cv;

src/Network.h

@@ -36,6 +36,7 @@ namespace bayesnet {
         vector<int> predict(const vector<vector<int>>&);
         vector<pair<int, double>> predict_proba(const vector<vector<int>>&);
         double score(const vector<vector<int>>&, const vector<int>&);
+        inline string version() { return "0.1.0"; }
     };
 }
 #endif