added a few more pieces to the framework, overhauled main.cc

src/display.h

@@ -11,18 +11,23 @@
 #include <vector>
 #include "position.h"
 #include "constants.h"
+#include "cursor.h"
 
 class display final {
 private:
         std::vector<std::string> contents;
+        cursor &curs;
 public:
         display();
+        display(cursor &s);
 
         void clear();
         // use this instead of overloading for clarity
         void print(std::ostream &out) const;
         void print_line(const std::string &line, const int linenum);
 
+        void render() const ;
+
         // will override any character that was there
         void print_position(const position &pos, const char ch);
 };