seancorfield/clj-time — pull request #35 by mw10013 (2012-09-17 04:26:43+00:00)
Title: format-local-time returns nil on bad date-time string

format-local-time returned current time on bad date-time string:

(format-local-time "aaa" :week-date-time)
"2012-W37-7T23:53:56.363-04:00"

This pull request has it return nil.