Change log for python-auth-credential

0.6 Tue Apr 17 2012
	* [mp] improvements and bug fixing

0.5	Fri Jan 20 2012
	* [mp] modules added

0.1	Tue Nov 22 2011
	* [mp] first release

[mp] = Massimo Paladin <Massimo.Paladin@cern.ch>
