Issue #2154435 by andypost, Berdir, mparker17: Rename EntityAccessController to EntityAccessControlHandler.

Issue #1987400 by joelpittet, andypost, drupalninja99, jerdavis, CaptainWonky, shanethehat, TrevorBradley | Cottser: Forum.module - Convert theme_ functions to Twig.

Issue #2149197 by penyaskito, mikey_p, vijaycs85, herom: Replace format_interval with \Drupal::service('date')->formatInterval().

Issue #597236 by Berdir, catch, msonnabaum, Xano, Wim Leers, jhedstrom, amateescu, corvus_ch, swentel, moshe weitzman, Gábor Hojtsy, riccardoR, killes@www.drop.org, et al: Add entity caching to core.

Issue #2216535 by jhodgdon, Berdir: Replace Node overview topic and Node API topic with Entity Hooks topic.

Issue #2281475 by roderik, slashrsm: Deprecate comment_new_page_count() and move it functionality into Comment storage controller.

Issue #2097123 by andypost, roderik, slashrsm, das-peter, mgifford, pfrenssen, YesCT | larowlan: Deprecate comment_num_new() in favour of method on CommentManager.

Revert "Issue #2097123 by slashrsm, roderik, mgifford, pfrenssen, andypost, das-peter | larowlan: Deprecate comment_num_new() in favour of method on CommentManager."

This reverts commit 6532718c.

Issue #2097123 by slashrsm, roderik, mgifford, pfrenssen, andypost, das-peter | larowlan: Deprecate comment_num_new() in favour of method on CommentManager.

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

Issue #2205185 by larowlan, hairqles, andypost, slashrsm: Split up ForumManager to create ForumIndexStorage.

Issue #2183113 by jhodgdon, effulgentsia, tim.plunkett, herom, larowlan: Update hook_help signature to use route_name instead of path.

Issue #2250335 by drupaledmonk, pingwin4eg | jhodgdon: Forum hook_help still using URL instead of route.

Issue #2089433 by ianthomas_uk, grom358, herom, thedavidmeister, visabhishek, longwave, Sweetchuck: Remove uses of deprecated XSS filter functions.

Issue #2226903 by pwolanin, dawehner, tvn, martin107, jessebeach: Step 1: Move static menu links to yml files.

Issue #2178725 by pwolanin, crowdcg, effulgentsia, Sutharsan: Make all core menu link machine names and the corresponding route names match.

Issue #2158003 by Wim Leers, msonnabaum, effulgentsia, moshe weitzman: Remove Block Cache API in favor of blocks returning #cache with cache tags.

Issue #2169361 by plopesc: Convert COMMENT_HIDDEN & COMMENT_CLOSED & COMMENT_OPEN  to a constant on the comment field interface.

Issue #2170425 by miraj9093, sandipmkhairnar, tgeller: Make text consistent: "Add new content" -> "Add content".

Issue #1996238 by sun, nod_, damiankloip, Wim Leers, longwave, alexpott, Xano, mdrummond, Mark Carver, Jeff Burnz, highrockmedia, joelpittet, et al: Replace hook_library_info() by *.libraries.yml file.

Issue #2196895 by divesh.kumar: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in forum module.

Issue #1981858 by Berdir, tim.plunkett, longwave, Les Lim: Rename hook_entity_info/alter() to hook_entity_type_build/alter().

Issue #2028025 by David Hernández, Berdir, larowlan, ceng, YesCT, a_thakur: Expand CommentInterface to provide methods.

Issue #2092343 by joelpittet, c4rl, Mark Carver: Consolidate forum.module and remove call to _theme_table_cell() within template_preprocess_forum_topic_list().

Issue #2078387 by Xano, andypost, twistor, splatio, InternetDevels, amateescu, Berdir, larowlan, vladan.me: Add an EntityOwnerInterface.

Issue #2047633 by pwolanin, dawehner, kim.pepper, Xano, amateescu, tim.plunkett: Move definition of menu links to hook_menu_link_defaults(), decouple key name from path, and make 'parent' explicit.

Revert "Issue #2047633 by dawehner, pwolanin, Xano, amateescu, tim.plunkett: Move definition of menu links to hook_menu_link_defaults(), decouple key name from path, and make 'parent' explicit."

This reverts commit 531fd593.