Update SF2 deps to v2.3 - fixes #112

fixes#112
composers autoload order for compatibility with TYPO3 Flow framework 

This small change allow using the cboden/Ratchet out of the box with TYPO3 Flow .

Unfortunately TYPO3 Flow can not load second entry given in the manifest for autoloading (Source: http://docs.typo3.org/flow/TYPO3FlowDocumentation/stable/TheDefinitiveGuide/PartIII/PackageManagement.html#using-3rd-party-packages )

Only one of both tricks is needed in Flow's Settings.yaml:

:1. excluding annotations
------
TYPO3:
  Flow:
    reflection:
      ignoredTags: ['event', 'temporary', 'type', 'note']
------
:2. excluding this package from Object Framework (Note: this makes AOP for Ratchet off)
------
TYPO3:
  Flow:
    object:
      excludeClasses:
        'cboden.Ratchet': ['Ratchet\\.*']
------
).
Merge pull request #116 from RafaelKa/patch-1

composers autoload order for compatibility with TYPO3 Flow framework
Allow guzzle 3.7

Because lot of other dependencies rely on guzzle 3.7, and so it's impossible to satisfy everybody.
Merge branch 'refs/heads/patch-1'
Updated dependencies
Update changelog for 0.2.8
Merge pull request #124 from romainneutron/patch-1

Update changelog for 0.2.8
Merge branch 'refs/heads/master' into 0.3

Conflicts:
	CHANGELOG.md
	composer.json
	composer.lock