Issue #2143089 by imadalin, yched, dawehner, harsha012, Wim Leers, c.nish2k3, bradjones1, damiankloip, xjm: Clean up normalizer parameter and variable names to use 'field_items' consistently etc

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2751325 by damiankloip, Grayside, dawehner, Wim Leers, catch, tedbow, alexpott, himanshu-dixit, Jo Fitzgerald, xjm, andrewbelcher, skyredwang, effulgentsia, hampercm, eelkeblok: All serialized values are strings, should be integers/booleans when appropriate

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

Issue #2502621 by Pravin Ajaaz, hussainweb, Peacog, jhodgdon, ivanjaros: Replace implement notes with inheritdoc tag

Issue #2566335 by damiankloip, dawehner: Context data is not passed to normalize() field calls in ComplexDataNormalizer

Caused a conflict with a higher-priority patch; temporary rollback for now.

This reverts commit ba6d3fb7.