Issue #2850085 by maxocub, heddn, Jo Fitzgerald, Gábor Hojtsy, catch, larowlan, mikeryan: Redirects for translation set migration path in Drupal 6 and 7

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

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2250239 by dawehner | sun: Remove needless ContainerAware dependency from ParamConverterManager.

Issue #2185831 by tim.plunkett: Split up ParamConverterManager and stop throwing NotFoundHttpException.

Issue #2103145 by tim.plunkett, damiankloip, neclimdul: Fixed ParameterConverter mangles raw values.

Issue #2031487 by fubhy, dawehner, pwolanin:  When replacing the upcasted values in the request attributes array, retain the original raw value too.

Issue #1943846 by fubhy, effulgentsia, tim.plunkett: Improve ParamConverterManager and developer experience for ParamConverters.

Issue #1798214 by tnightingale, g.oechsler, fubhy, katbailey, effulgentsia, Crell, dipen chaudhary: Upcast request arguments/attributes to full objects.