0.4.0

• Fix: Require codeclimate/php-test-reporter:0.2.0 (#69)
• Fix: Also run builds on PHP5.6, PHP7, and HHVM (#70)
• Fix: Only collect and report coverage when merging to master (#71)
• Fix: Streamline Travis configuration (#73)
• Fix: Add editorconfig support (#74)
• Fix: Add it and composer targets (#75)
• Fix: Add missing license (#76)
• Fix: Require refinery29/php-cs-fixer (#72)
• Fix: Use singular for test folder (#77)
• Fix: Also validate composer.json and composer.lock (#78)
• Fix: Require refinery29/test-util (#80)
• Fix: Update refinery29/php-cs-fixer-config (#81)
• Fix: Shift environment variables (#82)
• Fix: Limit range of PHP installations (#83)
• Fix: Rename Entity to Resource (#84)
• Fix: Extract interfaces and mark value objects as final (#85)
• Fix: Guard against invalid values (#79)
• Fix: Do not set up system under test in setUp() (#86)
• Fix: Rename methods returning mocks (#87)
• Fix: Inject dependencies via constructor (#88)
• Fix: Simplify assertions (#89)
• Fix: Use CommandTester (#90)
• Fix: Id needs to be greater than 0 (#91)
• Fix: Rename variables in tests (#92)
• Enhancement: Implement Author as a value object (#93)
• Fix: Use Helper to format time and memory (#94)
• Fix: Update symfony/console and symfony/stopwatch (#95)
• Fix: Make stopwatch an instance property (#96)
• Fix: Use SymfonyStyle for output (#97)