6.5

• Fixes bugs
• Upgrades dependencies

Added heaps of compatibility code (error messages / queries) to be compatible with s3cmd. Also fixed a bug in the handling of signed chuncks

Merge pull request #131 from scireum/jvo/issue_123

Standard-Compliant Error Messages

5.2: Merge pull request #101 from scireum/aha/FastETags

Aha/fast e tags

5.1: Merge pull request #102 from scireum/aha/SignerFixx

Aha/signer fixx