Slow Cooker Baked Beans

1 pound bacon, chopped
1 onion, chopped
1 (16 ounce) can lima beans, drained
1 (16 ounce) canned kidney beans, drained
1 (16 ounce) can Great Northern white beans, drained
1 (16 ounce) can jalapeno pinto beans, not drained
½ cup brown sugar
½ cup catsup
1 Tablespoon Worcestershire sauce
1 Tablespoon vinegar

Saute bacon and onion in skillet.  Combine bacon mixture with the remaining ingredients in slow cooker; mix well.  Cook on low for 6 hours, stirring occasionally.