Replace :eval/:repl with autodef functions

+ :eval => set-eval-handler!
+ :repl => set-repl-handler!
+ Updates all internal references.

modules/lang/elm/config.el

@@ -6,7 +6,7 @@
 (after! elm-mode
   (add-hook! 'elm-mode-hook #'(flycheck-mode rainbow-delimiters-mode))
   (set-company-backend! 'elm-mode 'company-elm)
-  (set! :repl 'elm-mode #'run-elm-interactive))
+  (set-repl-handler! 'elm-mode #'run-elm-interactive))
 
 
 (def-package! flycheck-elm