use stdbool for true/false

engine/todo.c

@@ -1,6 +1,7 @@
 #include "todo.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <string.h>
 
 // Memory management

engine/todo.h

@@ -2,8 +2,6 @@
 #define TODO_H
 #define TODO_MAX_TITLE_LENGTH 255
 
-#define true 1
-#define false 0
 typedef unsigned char bool_t;
 
 typedef struct {