Revision history: 0.05 2009/12/4 - Dec dates fix 0.04 2009/7/15 - POD fix - Switch module usage removed due to the long initialization delay - Fixed bug with literal month names 0.03 2009/6/26 - POD fix - prerequisites added to Makefile.PL - more tests added 0.02 2009/6/9 - POD fixes - to_array() function added to ::TreeSet - Makefile.PL dependency fixed 0.01 2009/7/6 - initial release