Update: implement missing serialized functions and fix bugs

Update: implement missing serialized functions and fix bugs

Implement fl_unserialize_simple() and fl_unserialize_simple_get().

The last character in the last string in the unserialized array gets cut off.
- This happened because the stopping point was incorrectly compensating for the splitter character for the last character in the string.

The width (UTF-8 character width) is not part of the locations size.