1.7.1

• Update actions/checkout to v2.
• Update year in LICENSE.
• Add CakePHP examples.
• Add REDIS_PORT environment variable in examples that use Redis for caching.
• Add narrowspark/automatic-composer-prefetcher in tools.
• Add support to specify version of tools.
• Fix codeception for PHP 5.6, 7.0 and 7.1.
• Fix warnings in actions.yml.
• Update default packages in linux.