sub_diff.rb in sub_diff-1.1.1

- old
+ new

@@ -1,6 +1,7 @@
 require 'delegate'
 require 'forwardable'
+require 'sub_diff/buildable'
 require 'sub_diff/adapter'
 require 'sub_diff/builder'
 require 'sub_diff/collection'
 require 'sub_diff/diff'
 require 'sub_diff/differ'