Added without_versioning method

Signed-off-by: Andy Stewart <boss@airbladesoftware.com>

lib/paper_trail/has_paper_trail.rb

@@ -104,6 +104,13 @@ module PaperTrail
         subsequent_version.reify if subsequent_version
       end
 
+      def without_versioning(method=nil)
+        paper_trail_was_enabled = self.paper_trail_enabled_for_model
+        self.class.paper_trail_off
+        method ? method.to_proc.call(self) : yield
+        self.class.paper_trail_on if paper_trail_was_enabled
+      end
+
       private
 
       def version_class

test/unit/model_test.rb

@@ -201,6 +201,8 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
           end
         end
       end
+
+
     end
   end
 
@@ -334,6 +336,13 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
         end
       end
 
+      context 'when destroyed "without versioning"' do
+        should 'leave paper trail off after call' do
+          @widget.without_versioning :destroy
+          assert !Widget.paper_trail_enabled_for_model
+        end
+      end
+
       context 'and then its paper trail turned on' do
         setup { Widget.paper_trail_on }
 
@@ -344,6 +353,22 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
             assert_equal @count + 1, @widget.versions.length
           end
         end
+
+        context 'when updated "without versioning"' do
+          setup do
+            @widget.without_versioning do
+              @widget.update_attributes :name => 'Ford'
+            end
+          end
+
+          should 'not create new version' do
+            assert_equal 1, @widget.versions.length
+          end
+
+          should 'enable paper trail after call' do
+            assert Widget.paper_trail_enabled_for_model
+          end
+        end
       end
     end
   end