Don't despair a new and improved version is on its way. Despite the heavy workload at my daytime job, am still slowly working on Caravelle. I've opted for a complete revision of the code this time, and it is taking long. On the positive side, some of the features that were promised for later versions are already going to be implemented, and other's are still on hold.
Unfortunately, for some of you, one of the improvements forces me to upgrade to a later version of Cocoa, and consequently, the Caravelle will not be supported in versions previous to 10.11. That means, Lion, Mountain Lion and Yosemite will no longer be supported. I know that this will be a disappointment to some of you, given the controversy on the upgrades to El Capitan. Many tech experts didn't encouraged it.
The parts that are being postponed for the time being are the directory comparison. Sorry guys, but I hope to compensate you for a much better App.