New module for functions I no longer need to work on

lib.(h|c) basically has structures and functions I no longer want to
stare at in main.c

lib.h

@@ -0,0 +1,23 @@
+#ifndef LIB_H
+#define LIB_H
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define MAX(a, b) (a > b ? a : b)
+
+bool usable_character(char c);
+char *fread_all(FILE *fp);
+void print_error(const char *handle, size_t row, size_t column,
+                 const char *reason);
+
+typedef struct Buffer
+{
+  const char *name;
+  size_t size;
+  char data[];
+} buffer_t;
+
+buffer_t *buffer_init_str(const char *name, const char *str, size_t str_size);
+#endif