v4.0.0

Updated localheinz/php-cs-fixer-config to v1.22.*
Updated pedrotroller/php-cs-custom-fixer to v2.18.1
Added kubawerlos/php-cs-fixer-custom-fixers" v1.13.0

added and updated rules

updated: php_unit_test_class_requires_covers: false

new: final_class: true
new: ordered_interfaces: true
new: php_unit_dedicate_assert_internal_type: true
new: php_unit_mock_short_will_return: true
new: php_unit_size_class: true
new: native_function_type_declaration_casing: true
new: simple_to_complex_string_variable: true
new: single_trait_insert_per_statement: true
new: InternalClassCasingFixer: true
new: MultilineCommentOpeningClosingAloneFixer: false
new: NoCommentedOutCodeFixer: true
new: NoDoctrineMigrationsGeneratedCommentFixer: true
new: NoImportFromGlobalNamespaceFixer: false
new: NoLeadingSlashInGlobalNamespaceFixer: true
new: NoNullableBooleanTypeFixer: false
new: NoPhpStormGeneratedCommentFixer: true
new: NoReferenceInFunctionDefinitionFixer: false
new: NoUnneededConcatenationFixer: true
new: NoUselessCommentFixer: false
new: NoUselessDoctrineRepositoryCommentFixer: true
new: NullableParamStyleFixer: false
new: OperatorLinebreakFixer: true
new: PhpdocNoIncorrectVarAnnotationFixer: true
new: PhpdocNoSuperfluousParamFixer: true
new: PhpdocParamOrderFixer: true
new: PhpdocParamTypeFixer: true
new: PhpdocSelfAccessorFixer: true
new: PhpdocSingleLineVarFixer: true
new: SingleSpaceAfterStatementFixer: true
new: SingleSpaceBeforeStatementFixer: true