Version 0.5.0

What's Changed

• refactor: split MethodReturnExpressionFinder into 2 classes by @mspirkov in #20
• tests: make the tests more uniform and simple by @mspirkov in #21
• chore: use Codecov by @mspirkov in #22
• feat: improve noForbiddenYiiAppProperties and noYiiAppPropertyMutation by @mspirkov in #23

Full Changelog: 0.4.0...0.5.0