Added a copy on write mutable simple collection
Removed unused collection
Minor changes
Documented and added consturctor to collection
Added immutable, duplicating collection
Started work on a path copy tree
Filled in more of implementation
More changes
Fixed issues following rebase
Enhanced path copy tree
Changed the DelegatingIterator to the ConvertingIterator
Updated changelog
Improvements for path copy tree
Changed 'matt' to 'Matt Champion'