Don't unwrap List items during internal operations such as copy().
Don't unwrap List items during internal operations such as copy().

Another fix to ensure Leaf objects are copied properly so link expansion
works correctly. At this point everything appears to behave like the old
coil again so time to start churning through the refactor again.
kovacsbalu/coil,tectronics/coil,tectronics/coil,marineam/coil,kovacsbalu/coil,marineam/coil