Extended GotFolder class not to return any package information for packages whose package folder can not be found as a subdirectory of the top-level packages folder.
Made PackagesFolder.Install inject our default dependencies.
Extended PackagesFolder with property FullPath in addition to Path (as given), and made GotFolder utilize the FullPath when operating.
Added Utilities class to GoodGet, and moved GotFolder.AssureDirectory method into it.