I was referring to the live demo at http://stripe.github.com/jquery.payment/example/. Either way, I wouldn't consider the library interpreting 113 as 11/3 as a "working".
Secondly, remember this is for credit card expirations and not normal dates. You can probably make an assumption that 11/30 (November 2030) isn't currently valid input either. I have never seen an expiration date further than 10 years in the future. Although more research on the topic would be needed to figure out the true restrictions.