refactoring done, small bugfixes included, vectors and lists of non-primitive types are not working though

demo.c

@@ -1,21 +1,15 @@
-#include <odweta/string.h>
+#include <odweta/vector.h>
 
 int main() {
-    //printf("before init\n");
-    string_t *s = string_from("test string");
+    vector_t *v = vector_new(INT);
 
-    //printf("before 1st println\n");
-    string_println(s);
+    vector_push(v, &(int){1});
+    vector_push(v, &(int){2});
+    vector_push(v, &(int){3});
 
-    //printf("before pushing chars\n");
-    string_push_chars(s, " appended");
+    vector_print(v);
 
-    //printf("before 2nd println\n");
-    string_println(s);
+    vector_cleanup(v);
 
-    //printf("before cleanup\n");
-    string_cleanup(s);
-
-    //printf("before end\n");
     return 0;
 }