Version 0.72 (2010-11-23)
	* Include examples and MANIFEST.in in source build (add them to
	  MANIFEST.in)
	* Remove __rcsid__ constant from IPy module

Version 0.71 (2010-10-01)
	* Use xrange() instead of range()
	* Use isinstance(x, int) instead of type(x) == types.IntType
	* Prepare support of Python3 (use integer division: x // y)
	* Fix IP(long) constructor: ensure that the address is not too large
	* Constructor raise a TypeError if the type is not int, long,
	  str or unicode
	* 223.0.0.0/8 is now public (belongs to APNIC)

Version 0.70 (2009-10-29)
	* New "major" version because it may break compatibility
	* Fix __cmp__(): IP('0.0.0.0/0') and IP('0.0.0.0') are not equal
	* Fix IP.net() of the network "::/0": "::" instead of "0.0.0.0".
	  IPy 0.63 should fix this bug, but it wasn't.

Version 0.64 (2009-08-19)
	* Create MANIFEST.in to fix setup.py bdist_rpm, fix by Robert Nickel

Version 0.63 (2009-06-23)
	* Fix formatting of "IPv4 in IPv6" network, eg. IP('::ffff:192.168.10.0/120'),
	  the netmask ("/120" in the example) was missing!

Version 0.62 (2008-07-15)
	* Fix reverse DNS of IPv6 address: use ".ip6.arpa." suffix instead of
	  deprecated ".ip6.int." suffix

Version 0.61 (2008-06-12)
	* Patch from Aras Vaichas allowing the [-1] operator
	  to work with an IP object of size 1.

Version 0.60 (2008-05-16)
	* strCompressed() formats '::ffff:a.b.c.d' correctly
	* Use strCompressed() instead of strFullsize() to format IP addresses,
	  ouput is smarter with IPv6 address
	* Remove check_addr_prefixlen because it generates invalid IP address

