Externally visible changes since v2.0.1:
- Add --max_blob_size flag.
- Fix goroutine leak in bytestream Write.
- Add flag to disable access logging.
- Resolve symlinks in disk cache storage path.
- Add config setting to allow unauthenticated reads.
- Stopped testing on ubuntu 16.04.
- Remove long-ignored --tls_enabled flag.
- Deprecate s3.key_version flag.