Correct boundaries while processing list.unformat()
Revert "Don't allow adding duplicates through addToList()"

This reverts commit 72e58a0f3467196f68a65cd0207115eae0f23d53.
Remove erroneous @private annotation
Never expect a boundary with a null container
Correct annotation
Improve aloha.list.format()
Refactor links and some of there tests. Work in progress...
link -> links
wip