Version 1.2.0 of ParserReflection

This release contains a lot of fixes and improvements since 1.1.0:

• Fixed ReflectionParameters with class constant as default value (#44)
• [NodeResolver] allow parsing of scalar expressions (#47)
• Fix NodeExpressionResolver to reflect system classes (#50)
• Parse top level “define” statements in a root namespace (#46)
• Add test-case scenario for resolving self: constants for parameters, #49
• Change logic of collecting constants to have an ability to resolve self constants recursively
• Enable 7.1 for code coverage collecting
• Added tests for parameters in 5.6 and 7.0
• Fixed isOptional() result for variadic parameters, they should be optional
• Fixed bug with accessing default value for variadic optional parameters
• Added support for the pow operator in PHP5.6
• Fixed type handling for PHP7.0
• Enable parsing of files with PHP7.0 classes
• isAbstract() for methods in the interface should return true
• Fix broken compatibility with 5.5
• Added support for displaying return types in the ReflectionMethod->__toString()
• Fixed typehint for the method
• Allow to install latest version of nikic/php-parser
• Fixed ReflectionProperty->isDefault() implementation
• Fixed buggy self::class resolution for old versions of PHP
• Add support for nullable types, related to the #12
• Implement ReflectionFile->isStrictMode check for the strict_types, resolves #59

This release also provides support for parsing PHP7.1 files. However, ReflectionClassConstant and constants with modifiers are not supported yet.