===version 1.3
-fixed a bug for GCC users(thx Brendan)

===version 1.2
-added word boundary match \b and \B
-added vertical tab escape \v
-\w now also matches '_' (underscore)
-fixed greediness for * and +

===version 1.1 , April 1, 2004
-fixed some minor bug
-added predefined character classes(\w,\W,\s,\S etc...)

===version 1.0 , February 23, 2004
-first public realase