wip
Wip. Upload hashes working.
Refactor methods. Md5 checking of entire file on uploads and downloads.
Hashing working on uploads / downloads.
Verbose output. Debug flag.
All working.
Multipart md5 check.
Piping downloads.
Concurrent md5 calculation partially complete.

Upload of md5 to file seems to be working.
Download and verification of md5 file.

WIP