v0.1.6

• --method link (default method) works for cloud storages
  • don't make an organized directory on --out-dir if --out-dir's strorage is same as the source storage.
  • e.g. outputs files in metadata.json is on gs:// and --out-dir is also gs://
  • this will make an empty --out-dir and there will be only one HTML report file
  • users can explicitly define --method copy to make actual copies on --out-dir