- switching from Cell to RefCell for NodePtr
- deep cloneing and destroying of trees
- BoxedNode is a NonNull now instead of an Rc
- implemented Read for `&[u8]`
- impl Display for NodeHandle which only shows the node header and the index of
the handle
- Fs<T> has functionality for retrieving the root directory, looking up inodeids
by absolute path, getting the inodeitem, inoderef, dirindex and diritem by
inodeid, listing extents of a inodeid (if regfile)
- simple INode structure holding the inodeid and the path to the inode as a list
of byte sequences
Janis