Prepare for release of Signature v4

[Daisuke Kashiwagi]

• create a release branch
• Review the diff from previous release https://github.com/DQNEO/Amazon-S3-Thin/pull/23/files
• List up B.C breaking points
• Write Changelog
• Ship it !

[Daisuke Kashiwagi]

Changes

Features

• [Environment] Abandon perl 5.8 (break B.C.)
• [Signature v4] Make it work with signature v4. (use path style addressing for v4) (@showaltb)
• [Signature v4] Add region option. It is required by default (break B.C.) (@showaltb)
• [Signature v4] Add signature_version option. (@showaltb)
• [Core] Remove host option (break B.C.)
• [S3 api]Add API calls of put_bucket and delete_bucket
• [Core] Suppresses uri encoding of the bucket key. (@showaltb)
• [Environment] make it work with Carton on travis
• [Dev] Add debug option

Internal design

• Add Credentials class to contain aws credentials
• Add Resource class to express URI

[Daisuke Kashiwagi]

.pause file was backup on my Dropbox. I rescued it.

[Daisuke Kashiwagi]

Shipped !! https://metacpan.org/release/DQNEO/Amazon-S3-Thin-0.20