Found another dependency.

Jason Duncan · Jason Duncan · commit 77fb389becad · 2018-11-29T14:11:27.000-05:00
diff --git a/format-table.el b/format-table.el
@@ -28,6 +28,7 @@
 ;;; Code:
 
 (require 'dash)
+(require 'subr-x)
 (require 'json)
 
 (defvar format-table-format-alist
