* 1.3.1 Jan 2008
    - fix portability issue when compiling on some OSes

* 1.3   Nov 2007
    - support custom element seek
    - support for dumping/restoring lists on files

* 1.2   Jun 2007
    - natively support transparent inclusion in C++ apps
    - use sentinels to improve performance on list traversals
    - fix list_insert_at that could output inconsistent lists
        when inserting into even-sized lists in position 0

* 1.1   Apr 2007
    - use freelists for improving memory allocation performance
    - fix list_concat() that could output inconsistent lists
    - new ready-made comparators, metric and hashing functions for
        the most common types (numeric and strings)
    - new list_find() function

* 1.0   Jan 2007
    - first release to public