Mac users: command = super, option = meta

Apparently these have different defaults on emacs-mac, so we set these
to keep them consistent.

core/core-keybinds.el

@@ -23,6 +23,14 @@ and Emacs states, and for non-evil users.")
   "An overriding keymap for <leader> keys.")
 
 
+;;
+;;; Keybind settings
+
+(when IS-MAC
+  (setq mac-command-modifier 'super
+        mac-option-modifier 'meta))
+
+
 ;;
 ;;; Universal, non-nuclear escape