v1.5.4

• Reset Idiorm state when a cached result is returned [fayland (and Treffynnon)] - issue #319
• Fix travis builds for PHP 5.2+ (adding 7.0 and 7.1) and document support for newer PHP versions [Treffynnon]
• Correct PHPDoc comments for selectMany() [kawausokun] - issue #325
• Add pdo_sqlite to the composer require-dev dependencies [qyanu] - issue #328