tools.rb in alf-0.12.0

- old
+ new

@@ -4,9 +4,10 @@
   # 
   module Tools
     require 'alf/tools/coerce'
     require 'alf/tools/to_ruby_literal'
     require 'alf/tools/to_lispy'
+    require 'alf/tools/to_relation'
     require 'alf/tools/tuple_handle'
     require 'alf/tools/miscellaneous'
 
     extend Tools
   end # module Tools