ServiceStack/ServiceStack.Text — pull request #383 by jeffgabhart (2013-10-10 16:25:42+00:00)
Title: Adds a failed LowercaseUnderscore Test to show regression

Previous to version 3.9.66, sending `DigestHA1Hash` through ToLowerCaseUnderscore returned `digest_h_a_1_hash`. Now it returns `digest_h_a1_hash`