Fixed up the code a bit and fixed a memory leak bug (of course, there's still no good way to free Tokens but that'll be sorted out later).

src/main.c

@@ -26,7 +26,7 @@ int main(int argc, char* args[]) {
         Token* t = (Token*) list->content[i];
 
         printf("[%i] '%s'", t->type, t->lexeme);
-        if (t->type == NUMBER || t->type == HEX) printf(" NUM: %ld", (long) t->value);
+        if (t->type == NUMBER || t->type == HEX) printf(" NUM: %ld", *((long *) t->value));
         printf("\n");
     }