– Fixed: File size representation is now faithful and matches Finder.
– Fixed: Uploaded folders now uploaded as folders (rather than expanding to contents).
– Fixed hang in progress window (in two edge-cases).
– Enhanced: Error reporting dialogue now has a more meaningful title and buttons (and logs advisories instead of popping them up as spurious errors).
– Enhanced: Headers in tables no longer get weird highlight when dragging-and-dropping on older OSes (e.g. Mac OS X 10.9).

Rsync Client is detailed further here.