Fixed PHPDoc
[Form] Fixed failing tests
[Intl] Changed Intl::getIcuVersion() to return the stub version if the intl extension is not loaded
[Intl] Removed method IntlTestCase::skipIfInsufficientIcuVersion()
[Intl] Added autoload.php which was ignored by .gitignore
[Intl] Made the $locale parameter optional in the bundle interfaces
[Locale] Adapted to latest Intl changes
[Form] Adapted to latest Intl changes
[Validator] Adapted to latest Intl changes
[Intl] Updated the README file
[Intl] Fixed flawed PHPDoc
[Intl] Updated the README
[Intl] Moved the content of the README file to symfony/symfony-docs
[Intl] Fixed various problems in the resource compilation process
[Intl] Fixed small bugs in the resource bundle transformation
[Intl] Improved the bundle compilation process
[Intl] Bumped the stub version to 50.1.2
[Intl] Changed composer.json to disallow future versions of the Icu component
[Locale] Fixed failing tests
[Intl] Added IntlTestHelper class for convenience