Add else blocks to for and case nodelists

lib/liquid/tag.rb

@@ -1,7 +1,7 @@
 module Liquid
   class Tag
-    attr_accessor :nodelist, :options
-    attr_reader :warnings
+    attr_accessor :options
+    attr_reader :nodelist, :warnings
 
     def self.new_with_options(tag_name, markup, tokens, options)
       # Forgive me Matz for I have sinned. I know this code is weird

lib/liquid/tags/case.rb

@@ -15,6 +15,10 @@ module Liquid
       super
     end
 
+    def nodelist
+      @blocks.map(&:attachment).flatten
+    end
+
     def unknown_tag(tag, markup, tokens)
       @nodelist = []
       case tag

lib/liquid/tags/for.rb

@@ -52,6 +52,14 @@ module Liquid
       super
     end
 
+    def nodelist
+      if @else_block
+        @for_block + @else_block
+      else
+        @for_block
+      end
+    end
+
     def unknown_tag(tag, markup, tokens)
       return super unless tag == 'else'
       @nodelist = @else_block = []