Issue #2290251 by er.pushpinderrana, amitgoyal, ParisLiakos, joshi.rohit100: Make Aggregator plugin developer info more discoverable

Issue #2292025 by tim.plunkett: Convert BreadcrumbBuilderInterface applies() and build() to use RouteMatch.

Issue #2161801 by YesCT, vijaycs85, fran seva, batigolix, ifrik: Update hook_help for Config translation module.

Issue #2238217 by effulgentsia, neclimdul, martin107, tim.plunkett, cweagans, kim.pepper, xjm: Introduce a RouteMatch class.

Issue #1428784 by ivasyk.orest, joshi.rohit100, tim.plunkett, martin107, Rajendar Reddy, visabhishek, wiifm, joachim: Document field data hooks: hook_field_views_data[_alter](), hook_field_views_data_views_data_alter().

Issue #2216541 by jhodgdon, Gábor Hojtsy: Fill in topic/@defgroup docs for Internationalization overview.

Issue #1989568 by Berdir: Remove block config ID from being used as an HTML ID or template suggestion.

Issue #1209674 by yoroy, kid_icarus, franz, pasive, barnettech, disasm, wesleydv, ericmulder1980, Sutharsan, apratt, theMusician, batigolix, vegantriathlete, amitgoyal, AndyThornton: Fix up UI text in Aggregator module

Issue #2288507 by er.pushpinderrana: Add documentation to entity type annotation classes to aid developers of entity types

Issue #2234439 by jhodgdon, cosmicdreams, xjm: Add a section for the plugin system to the API doc landing page.

Issue #2261083 by amitgoyal, joshi.rohit100, er.pushpinderrana, aschmoe: Move mention of System Help block from Help module help to System module help

Issue #2124957 by Wim Leers, catch: Replace 'content' cache tag with 'rendered' and use it sparingly.

Issue #2143291 by plach, alexpott, xjm, effulgentsia, pwolanin, swentel | yched: Clarify handling of field translatability.

Issue #1906810 by dawehner, damiankloip, tstoeckler, kgoel, fubhy, jrglasgow, xjm, Gaelan, socketwench: Require type hints for automatic entity upcasting.

Revert "Issue #1906810 by dawehner, damiankloip, tstoeckler, kgoel, fubhy, jrglasgow, xjm, Gaelan, socketwench: Require type hints for automatic entity upcasting."

This reverts commit c9e73f7d.

Issue #2269003 by damiankloip, Berdir: Fixed Unnecessary high memory usage in EntityType::getKeys().

Issue #1906810 by dawehner, damiankloip, tstoeckler, kgoel, fubhy, jrglasgow, xjm, Gaelan, socketwench: Require type hints for automatic entity upcasting.

Revert "Issue #1003788 by stefan.r, Alan D., Josh Waihi, JimmyAx, robhardwick, wiifm, twistor, pwolanin, bzrudi71, bellHead, john_brown: Fixed PostgreSQL: PDOException:Invalid text representation when attempting to load an entity with a string or non-scalar ID."

This reverts commit 4086829b.

Issue #1003788 by stefan.r, Alan D., Josh Waihi, JimmyAx, robhardwick, wiifm, twistor, pwolanin, bzrudi71, bellHead, john_brown: Fixed PostgreSQL: PDOException:Invalid text representation when attempting to load an entity with a string or non-scalar ID.