Merge pull request #830 from brunolarouche/main

job_list `.respond_to?` updated to an instance method

Author: taketo1113

lib/whenever/job_list.rb

@@ -37,7 +37,7 @@ def method_missing(name, *args, &block)
       @set_variables.has_key?(name) ? @set_variables[name] : super
     end
 
-    def self.respond_to?(name, include_private = false)
+    def respond_to?(name, include_private = false)
       @set_variables.has_key?(name) || super
     end