boto/boto — pull request #1591 by hblanks (2013-07-05 18:01:57+00:00)
Title: cloudformation/stack.py: update StackSummary so that it accepts floating point timestamps

This commit addresses https://github.com/boto/boto/issues/1588 by mirroring the existing logic in Stack.endElement(),
so that StackSummary's can accept the floating point timestamps that (at least some) AWS CloudFormation
endpoints emit.