Issue #37: fix a bug in the ston implementation for TDDirectoryNode and friends ... splicing in parent can lead to infinite loops
Issue #37: enable edit of .ston objects and raw filesystem files after cd'ing into a gateway reference to a filesystem directory .... open the door to sharing scripts by "directly editting object nodes and leaf nodes hosted in a git repository" ... still need to work on rm/touch combo but this is very close to complete!