
= 1999/09/20

Modified the match() method to return the position within the block.

= 1999/09/15

Added support for understanding network blocks in the form that the
whois database uses: FirstIP-LastIP.

= 1999/03/27

Jochen Wiedmann <joe@ispsoft.de> contributed a function to test an IP
address and a block to test see if the IP address is in the block. 
Accordingly, there is now a match() method.

Rob Walker <rob@varesearch.com> contributed a function to return the
first usable adress in a block.  Instead of using that, I added a function
to return the nth address in a block.  There is now an nth() function.

= 1998/11/29

Jean-Luc Szpyrka <Jean-Luc.Szpyrka@sophia.inria.fr> requested that a
function be provided that returns the oposite of a netmask.  Accordingly,
there is now the hostmask() method.

