Issue #2520540 by alexpott: Enforced configuration dependencies shouldn't have to be repeated in the calculated dependencies

Issue #2454649 by Aki Tendo, dawehner: Cache Optimization and hardening -- [PP-1] Use assert() instead of exceptions in Cache::merge(Tags|Contexts)

Issue #2576945 by hchonov: PathProcessorLanguage::initProcessors is not sorting the methods by weight

Issue #2578989 by ifrik, alvar0hurtad0, jhodgdon, Bojhan, snehi, mairi, rachel_norfolk: Update link descriptions on the Configuration page that are not correct for D8

Issue #2410497 by alvar0hurtad0, sdstyles, hussainweb, webchick, jhodgdon, mpdonadio: Update remaining url() and _l() calls in comments/documentation

Issue #2422481 by akalata, lokapujya, joelpittet: Convert language negotiation theme table to table #type

Issue #2576533 by alexpott, stefan.r, Wim Leers, dawehner, xjm, effulgentsia, catch: Rename SafeStringInterface to MarkupInterface and move related classes

Issue #2172843 by fgm, marthinal, pfrenssen, amateescu, andypost, Wim Leers, stefan.r, pwieck, deepak_123: Remove ability to update entity bundle machine names

Issue #2351667 by Maouna, zaporylie, Gábor Hojtsy: Can't add another language (due to validation errors)

Issue #2572929 by dawehner, pwolanin, mikeker, xjm, stefan.r, David_Rothstein, hussainweb, lauriii, Wim Leers, catch, chx, alexpott: Document lack of auto-escape in theme functions and add a theme autoescape helper function

Issue #2493475 by ifrik, walangitan, XaviP, jhodgdon, batigolix: Fix online docs references in Help to conform to our standards

Issue #2553719 by dschenk, penyaskito, lucastockmann, Sutharsan, axooh: Fix LanguageListBuilder::__construct phpdoc

Issue #2572599 by stefan.r, dawehner, pwolanin, amateescu: Replace !placeholder with @placeholder in a few remaining places

Issue #2570355 by Sutharsan, stefan.r, kgoel, josephdpurcell, joelpittet, justAChris, dawehner, pfrenssen, pwolanin, David_Rothstein, catch: Replace remaining !placeholder and @placeholder with :placeholder for URLs

Issue #2571375 by alexpott, webflo, stefan.r, Xano, mr.baileys: Remove TranslationManager dependency from LanguageManager

Issue #2560783 by stefan.r, joelpittet, lauriii, Cottser, Sutharsan, kgoel, justAChris, Gábor Hojtsy, dawehner, jhodgdon, effulgentsia, xjm, andypost, googletorp: Replace !placeholder with :placeholder for URLs in hook_help() implementations

Issue #2473947 by Cottser, davidhernandez, rachel_norfolk, rteijeiro, cilefen, alimac, akalata, YesCT, mortendk: Prefix form-item-* classes with js-

Issue #2557113 by stefan.r, alexpott, dawehner, joelpittet, cilefen, lauriii, plach, catch, chx, xjm: Make t() return a TranslationWrapper object to remove reliance on a static, unpredictable safe list

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 #2561259 by stefan.r, lauriii, joelpittet, andypost: Cast (optgroup) array keys that may hold translated strings to string

Issue #2005546 by mdrummond, joelpittet, Manuel Garcia, lauriii, lokapujya, epari.siva, hosef, rpayanm, emma.maria, HOG, zetagraph, wmortada, rteijeiro, Cottser, hussainweb, madhavvyas: Use branding block in place of page template branding variables (site name, slogan, site logo)

Issue #2473945 by Cottser, rachel_norfolk, axe312, davidhernandez, yannickoo, emma.maria, cilefen, akalata, jaxxed, LewisNyman: Prefix form-item classes with js-

Issue #2558187 by sdstyles: Remove usage of UrlGeneratorInterface::generateFromPath() in language module

Issue #2560641 by alexpott, lauriii, Xano, borisson_, ianthomas_uk, olli: Remove all usages SafeMarkup::checkPlain() from render arrays

Revert "Issue #2560641 by alexpott, lauriii, Xano, borisson_, ianthomas_uk: Remove all usages SafeMarkup::checkPlain() from render arrays"

This reverts commit 31007609.

Issue #2560641 by alexpott, lauriii, Xano, borisson_, ianthomas_uk: Remove all usages SafeMarkup::checkPlain() from render arrays

Issue #2560851 by alexpott, Xano: Deprecate EntityListBuilder::getLabel() and remove usages of SafeMarkup::checkPlain()

Issue #507488 by lauriii, mdrummond, Wim Leers, Manuel Garcia, pwolanin, davidhernandez, chx, jibran, andypost, dawehner, Xano, tuutti, Gábor Hojtsy, LewisNyman, maximiliam, eiriksm, borisson_, bill richardson, Fabianx, joelpittet, Jeff Burnz, xjm, webchick, Bojhan, EclipseGc, emma.maria, tim.plunkett: Convert page elements (local tasks, actions) into blocks

Issue #2130307 by quietone, michaellenahan, phenaproxima, David Hernández, fastangel, eliza411: Variable to config: language.negotiation [d7]

Issue #2559605 by Cottser, stefan.r: Convert SafeMarkup::checkPlain() in render arrays to #plain_text

Issue #2557519 by alexpott, joelpittet: Remove many usages SafeMarkup::checkPlain() and replace with Html::escape()

Issue #2346857 by andypost, claudiu.cristea, amateescu, m1r1k, Mile23, rpayanm, epari.siva, Berdir, yched: Set default property bundle_entity_type in EntityType to NULL