Add bin and edit workflow

bin/gems/html-proofer-5.0.10/lib/html_proofer/xpath_functions.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+module HTMLProofer
+  # https://stackoverflow.com/a/8812293
+  class XpathFunctions
+    def case_sensitive_equals(node_set, str_to_match)
+      node_set.find_all { |node| node.to_s == str_to_match.to_s }
+    end
+  end
+end