move everything to 'old' directory before merge

old/scripts/KiBoM/bomlib/sort.py

@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+
+import re
+
+
+def natural_sort(string):
+    """
+    Natural sorting function which sorts by numerical value of a string,
+    rather than raw ASCII value.
+    """
+    return [int(s) if s.isdigit() else s for s in re.split(r'(\d+)', string)]