Release 0.2.0

Remove automated tests for PHP 5.3 and hhvm

Update CHANGELOG.md

Add an incrementValue to Storage adapters

Add EditorConfig

Restructure CHANGELOG.md

update CHANGELOG.md

normalize composer.json

fix tests

fix #3

tests: don't allow hhvm and php7 to fail anymore

ensure newline at end of .travis.yml [ci skip]

fix invalid import

update CHANGELOG.md [ci skip]

move import in Flap