added fractions and RNG::trial

src/log.h

@@ -2,6 +2,7 @@
 #define __LOG_H__
 #include <fstream>
 #include <string>
+#include <vector>
 #include <memory>
 #include "constants.h"
 #include "characters.h"
@@ -10,6 +11,7 @@
 class logger final {
 private:
         std::ofstream out;
+        std::vector<char> display;
 public:
         logger(std::ofstream &&new_out);