public async Task Sync(DirectoryInfo source, string destination)
{
var filename = destination + "/" + HashStoreFilename;
Log.Verbose("Creating hashes for current deployment...");
var localFilesLookup = await FolderLookup.FromDirectory(source);
Log.Verbose("Retrieving previous deployment hashes...");
var remoteFilesLookup = await FolderLookup.FromFile(client, filename);
var filesToCopy = GetFilesToCopy(localFilesLookup, remoteFilesLookup);
var files = filesToCopy.Select(path => new FileInfo(Path.Join(source.FullName, path)));
client.MirrorDirTree(source, destination);
CopyFiles(source, files.ToList(), destination);
SaveLocalLookup(localFilesLookup, filename);
}