Merge branch 'release/0.2.0' into develop
Re-run new version of php-cs-fixer
Punctuation [ci skip]
Added contact details to readme [ci skip]
Consistency [ci skip]
Added support for cancellable promises (#72, reactphp/promise#20)
Updated README [ci skip]
Updated react/promise to 2.1.0
Merge branch 'feature/cancellable-promise' into develop
Bumped version and updated changelog.
Merge branch 'release/0.2.1'