Prepare for release (#63)

* Prepare for release

* Update CHANGELOG.md

Fix stream rewind in full formatter

Add new message formatter and fix ResponseBuilder

Prepare release

Update to 1.1.0

Merge pull request #28 from php-http/stable_release

Prepare stable relase

Merge pull request #24 from php-http/require-message-factory-puli

Require message-factory version that has Puli bindings

Prepare release

Update Change Log

Update Change Log