@iwehrman What about having just a `File.copy()` API for now, and later hoisting it up to `FileSystemEntry` once directories are supported also?  That seems to follow the "@gruehle rule" of additive API changes.

To me that'd be preferable to piecing together an emulated directory-copy that we'd have to test & fully support even though it's just a throwaway stopgap for a far simpler implementation once a brackets-shell API is added.