bbatsov/prelude — pull request #710 by pgmcgee (2014-10-12 00:05:24+00:00)
Title: In helm-everywhere, bind "C-x C-m" to helm-M-x

Since Prelude binds "C-x C-m" to (smex), I think helm-everywhere should bind "C-x C-m" to (helm-M-x).