Revision history for Business-CyberSource
v0.1.4    2011-08-23
	- turn Business::CyberSource::Request into an abstract factory for request
	  objects.
	- production attribute no longer has a default, so it must always be
	  created.
	- credit card expiration month/year most now be an integer

v0.1.3    2011-08-22
	- experimental CVN and DCC support

v0.1.2    2011-08-18
	- first implementation of follow-on credits

v0.1.1    2011-08-16
	- skip tests unless environment variables set

v0.1.0    2011-08-16
	- Initial release for testing comment and review