Issue #2853503 by Aki Tendo, alexpott, larowlan, Wim Leers, klausi, fgm, dawehner, mondrake, catch, Berdir, neclimdul, borisson_: Remove all assert('string') calls from Drupal core because deprecated in PHP 7.2

Issue #2901726 by mfernea, gmario, finn.lewis, robertoperuzzo, rachel_norfolk: Fix 'Squiz.Functions.MultiLineFunctionDeclaration' coding standard

Issue #2722609 by anoopjohn, mfernea, Jo Fitzgerald, chishah92, druprad, martin107, Mile23: Fix Drupal.Commenting.FunctionComment.ParamNameNoMatch

Issue #2787567 by alexpott: Refactor \Drupal\Component\Assertion\Handle to not break PSR-0/4 one class per file

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2337283 by hussainweb, Mile23, alexpott, aleksip, dawehner, heykarthikwithu, naveenvalecha, Crell, xjm, davidwbarratt, Fabianx, jhedstrom, tim.plunkett, larowlan, tstoeckler: Add a composer.json file to every component

Issue #2579095 by Aki Tendo: Create Inspector::assertStringable - a shorthand for (is_string($string) || (is_object($string) && method_exists($string, '__toString')

Issue #2408013 by Aki Tendo, alexpott, Fabianx, dawehner, Crell, jhodgdon, Wim Leers, aspilicious: Adding Assertions to Drupal - Test Tools