renamed display to output

src/arguments.cc

@@ -8,17 +8,17 @@
 
 #include "constants.h"
 #include "input/file_input.h"
-#include "display/file_output.h"
+#include "output/file_output.h"
 #include "input/console_input.h"
-#include "display/console_output.h"
+#include "output/console_output.h"
 #include "input/curses_input.h"
-#include "display/curses_output.h"
+#include "output/curses_output.h"
 #include "rng.h"
 
 feature proc_args(int argc, char **argv,
                   std::unique_ptr<cursor>  &curse,
                   std::unique_ptr<input>   &in,
-                  std::unique_ptr<display> &out,
+                  std::unique_ptr<output> &out,
                   std::unique_ptr<RNG>     &rng) {
         feature result = 0;
         std::string str;