0.2.0

Added

• Yoast\PHPUnitPolyfills\TestListeners\TestListenerDefaultImplementation: a cross-version compatible base implementation for TestListeners using snake_case method names to replace the PHPUnit native method names.
• Yoast\PHPUnitPolyfills\Helpers\AssertAttributeHelper trait containing a getProperty() and a getPropertyValue() method.
  This is a stop-gap solution for the removal of the PHPUnit assertAttribute*() methods in PHPUnit 9.
  It is strongly recommended to refactor your tests/classes in a way that protected and private properties no longer be tested directly as they should be considered an implementation detail.
  However, if for some reason the value of protected or private properties still needs to be tested, this helper can be used to get access to their value.
• Yoast\PHPUnitPolyfills\Polyfills\AssertNumericType trait to polyfill the Assert::assertFinite(), Assert::assertInfinite() and Assert::assertNan() methods as introduced in PHPUnit 5.0.0.
• Yoast\PHPUnitPolyfills\Polyfills\ExpectException trait to polyfill the TestCase::expectException(), TestCase::expectExceptionMessage(), TestCase::expectExceptionCode() and TestCase::expectExceptionMessageRegExp() methods, as introduced in PHPUnit 5.2.0 to replace the Testcase::setExpectedException() and the Testcase::setExpectedExceptionRegExp() method.
• Yoast\PHPUnitPolyfills\Polyfills\AssertFileDirectory trait to polyfill the Assert::assertIsReadable(), Assert::assertIsWritable() methods and their file/directory based variations, as introduced in PHPUnit 5.6.0.
• Yoast\PHPUnitPolyfills\TestCases\TestCase: support for the assertPreConditions() and assertPostConditions() methods.

Changed

• The minimum supported PHP version has been lowered to PHP 5.5 (was 5.6).
• The minimum supported PHPUnit version has been lowered to PHP 4.8.36 (was 5.7).
  Note: for PHPUnit 4, only version 4.8.36 is supported, for PHPUnit 5, only PHPUnit >= 5.7.21 is supported.
• Readme: documentation improvements.