- 
            Phoenix now has a lazy list implementation which is very similar but
            not identical to the implementation provided by FC++.
            
- 
                  Details can be found in Lazy
                  List.
                
- 
                  Tests have been added for the new features provided.
                
- 
                  This is an addition which causes no changes to the previous public
                  interface.
                
 
- 
            Fixes for #10927 and #11085