make manifest friendlier
switch to using context code
..which uses first parent by default
show file hashes only with debug switch
show permissions with verbose
fix up tests
Is there an error message when trying to diff non-existing files?
found: No such file or directory
not: No such file or directory
Is there an error message when trying to add non-existing files?
found: No such file or directory
not: No such file or directory