Set clang-format macro indent.

1) Set clang-format macro indent.
2) Run clang-format on every files.

src/ftxui/screen/screen.cpp

@@ -7,7 +7,6 @@
 #include "ftxui/screen/string.hpp"
 #include "ftxui/screen/terminal.hpp"
 
-
 namespace ftxui {
 
 namespace {

src/ftxui/screen/terminal.cpp

@@ -3,12 +3,12 @@
 #include <stdio.h>
 
 #ifdef WIN32
-#define WIN32_LEAN_AND_MEAN
-#define NOMINMAX
-#include <Windows.h>
+  #define WIN32_LEAN_AND_MEAN
+  #define NOMINMAX
+  #include <Windows.h>
 #else
-#include <sys/ioctl.h>
-#include <unistd.h>
+  #include <sys/ioctl.h>
+  #include <unistd.h>
 #endif
 
 #include <iostream>

src/ftxui/screen/wcwidth.cpp

@@ -59,9 +59,10 @@
  * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
  */
 
-#include "ftxui/screen/string.hpp"
 #include <wchar.h>
 
+#include "ftxui/screen/string.hpp"
+
 namespace {
 struct interval {
   int first;