starting to implement new lists
More work toward a new list implementation
Removed `Lists:ListToStr`
Prepared library code for new lists
More new-list stuff. Still have to fix orderability for the new lists.
Refactored the comparison stuff in `utils` and made the new-lists orderable
Prepare README for the new lists
Made the empty list into its own value of type list, instead of the atom `nil`
Type in readme