4.0.1

Bugfix release.

• Fix harmless bug when scanning for seperators with more than one character.
• Fix bug when parsing multi delete reply in case of error

4.0.0

• Support HEAD operation on objects.
• Change signature to use string for etag rather than Caml.Digest.t for clearer ocumentation
• Support Digest 0.6
• Remove dependency to Core
• Rewrite authentication code
• Switch to use Ptime for time conversion routines
• Support chunked transfer (put)
• Add streaming API
• Remove dependency on Cohttp
• Switch to dune
• Support IPv6
• Add option to use expect-100.
• Add option to limit result of ls
• Extend aws-cli
• Move region related function to own Region module