Merge pull request #80 from emirpasic/revert-79-revert-78-gofmt-2018-Jun-17-00-39

Revert "Revert "gofmt""

lists/arraylist/arraylist.go

@@ -110,6 +110,7 @@ func (list *List) IndexOf(value interface{}) int{
 	}
 	return -1
 }
+
 // Empty returns true if list does not contain any elements.
 func (list *List) Empty() bool {
 	return list.size == 0

lists/doublylinkedlist/doublylinkedlist.go

@@ -185,6 +185,7 @@ func (list *List) IndexOf(value interface{}) int {
 	}
 	return -1
 }
+
 // Empty returns true if list does not contain any elements.
 func (list *List) Empty() bool {
 	return list.size == 0

lists/singlylinkedlist/singlylinkedlist.go

@@ -166,6 +166,7 @@ func (list *List) IndexOf(value interface{}) int{
 	}
 	return -1
 }
+
 // Empty returns true if list does not contain any elements.
 func (list *List) Empty() bool {
 	return list.size == 0