#42 Diff two directories recursively

[Ray Logel]

Diffuse is a great tool, I use it all the time. The only feature I wish it had was an option that would allow caller to specific to directories which would be compared recursively. Similar to diff -ur <dir_a> <dir_b>. If that feature also supported the option to similar to '-N' which would treat absent files as empty that would make it even more powerful.