Issue #293318 by alex_b, Berdir, rootatwc, Aron Novak, mustafau, akahn: Convert Aggregator feeds into entities.
Issue #1852104 by sun, nod_, Cottser, swentel: #type details: Remove #collapsible property.
Issue #1893818 by Berdir: Fixed Plugin discovery caches of blocks are not cleared for all languages.
Issue #1893818 by Berdir, tim.plunkett: Fixed Plugin discovery caches of blocks are not cleared for all languages.
Issue #1893818 by Berdir, tim.plunkett, sun: Fixed Plugin discovery caches of blocks are not cleared for all languages.
Issue #916388 by disasm, podarok, dawehner, andypost, amateescu, Dave Reid: Convert menu links into entities.
Issue #1905870 by Berdir: Make feeds/feed items multilingual.
Issue #1864066 by sun, andypost, tim.plunkett: Simplify hook_menu_local_tasks() and MENU_DEFAULT_LOCAL_TASK usage.
Issue #1784784 by beltofte: Standardize capitalization on actions, in aggregator: 'update items', 'remove items'.
Issue #1920744 by Berdir: Fixed Fatal error on aggregator/categories.
Issue #1905870 by Berdir, Eric_A: Make feeds/feed items multilingual.
Issue #1836008 by dawehner, Berdir, alexpott, katbailey, effulgentsia, EclipseGc: Fixed Remove drupal_classloader() use in Drupal\Core\AnnotatedClassDiscovery.
Issue #1591806 by tim.plunkett, ryanissamson, jenlampton, Risse, psynaptic, Gábor Hojtsy, kmcculloch, pakmanlh, Rob Loach: Change block 'subject' so that it's called (admin_)label like everything else on the theme layer.
Issue #1849752 by effulgentsia, Berdir, jibran, neclimdul: Abstract non-Drupal-specific parts of AnnotatedClassDiscovery into a Drupal\Component base class.
Issue #1793074 by cweagans, sun, chx: Convert .info files to YAML.
Issue #1924528 by JohnAlbin: Fixed Remove aggregator.theme.css deprecated by entity conversion #293318.
Issue #1806334 by dawehner, xjm, tim.plunkett, rootatwc: Convert the node listing at /node to Views.
Issue #1912298 by vijaycs85: Create configuration schemas for aggregator module.
Issue #1875792 by Berdir, rootatwc, rbayliss: Standardize Guzzle exception handling.
Issue #1136686 by mgifford, Devin Carlson: Aggregator Template Needs Context for Accessibility.