Issue #2506445 by joelpittet, Ryan Weal, Sutharsan, alexpott, subhojit777, justAChris, nlisgo, effulgentsia, rpayanm, larowlan, chx, xjm, dawehner, geertvd, lauriii, izus, andypost, borisson_, Sharique: Replace !placeholder with @placeholder in t() and format_string() for non-URLs in tests

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

Issue #2324055 by dawehner, cilefen, znerol: Split up the module manager into runtime information and extension information

Issue #2318779 by Devin Carlson: [Meta] Aggregator Module: Fix documentation that refers to enabling/disabling of modules

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2190313 by pfrenssen, Berdir, amateescu, ianthomas_uk: Add $EntityType::load() and loadMultiple() to simplify loading entities.

Issue #2225399 by marcvangend, yanniboi, mr.baileys, Wim Leers, visabhishek: Apply formatters and widgets to Feed base fields.

Issue #2159369 by ParisLiakos: Move aggregator_refresh() and most of ->removeItems() logic to a service.

Issue #2152673 by ParisLiakos: Remove duplicate edit route from aggregator and make delete/add consistent with rest of core.

Issue #1878302 by martin107, InternetDevels, nick_daffodil, chrisroane: Use 'delete' over 'remove' in the aggregator module.

Issue #1199946 by alexpott, fubhy, bojanz, steinmb, chx, catch: Fixed Disabled modules are broken beyond repair so the 'disable' functionality needs to be removed.

Issue #2074037 by Wim Leers, effulgentsia: Add drupalPostUrl() — drupalPost()/drupalPostAjax() are for forms only, D8 JS performs non-form HTTP requests.

Issue #293318 by alex_b, Berdir, rootatwc, Aron Novak, mustafau, akahn: Convert Aggregator feeds into entities.