Issue #1898452 by joelpittet, amitgoyal, gnuget, steinmb, thedavidmeister, jenlampton, zaphoyd, Cottser, robmc, disasm, azinoman | c4rl: Simpletest.module - Convert theme_simpletest_result_summary functions to Twig.

Issue #1987424 by rteijeiro, oshelach, a-fro, JeroenT, joelpittet, Cottser, IshaDakota, InternetDevels, TommyK, Sutharsan, robmc, mark.labrecque, lokapujya, Gaelan, drupalninja99, Carolyn, jenlampton, longwave: Seven.theme - Convert theme_ functions to Twig.

Issue #2284383 by tstoeckler, lokapujya: Fixed All assertSomething() functions should return a bool indicating pass or fail.

Issue #2293419 by vijaycs85: Fixed Add config schema test to all configuration test in migration, fix bugs.

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

Issue #2252713 by lauriii, Dragan Eror, amitgoyal: Fixed table headers inside of status reports look strange.

Issue #2286403 by martin107: Inconsistent use of magic number when constants DIRECTION_LTR and DIRECTION_RTL already defined.

Issue #2286433 by ParisLiakos: Fixed CommentTypeForm and CommentTypeDeleteForm should typehint the PSR logger interface.

Issue #1999312 by baisong, lokapujya, botanic_spark, attiks: Add an 'empty image' option for responsive image.

Issue #2224847 by pwolanin, damiankloip, danblack, Berdir: Fixed Automatically shorten cid's in Cache\DatabaseBackend and PhpBackend.

Issue #2290259 by g3r4, er.pushpinderrana, joshi.rohit100, amitgoyal: Make developer docs for entity reference selection plugins more discoverable

Issue #1952064 by joshi.rohit100, yoroy, weekbeforenext, prabeen.giri, jonreid, nflowers1228, HaloFX, mparker17, paboden, babruix, sun: Shorten help text on user permissions/roles pages

Issue #2091415 by amitgoyal, mparker17, Crell, batigolix, pokurek | ifrik: Update hook_help for Restful Web Services module.

Issue #2091359 by joshi.rohit100, lokapujya, amitgoyal, jhodgdon, batigolix, lmirabile, Cyberschorsch | ifrik: Update hook_help for Search module.

Issue #2017257 by jason.bell, dead_arm, alexrayu, philipz, idebr, rteijeiro, emma.maria, frankbaele, LewisNyman: Create generic layout classes.

Issue #2253917 by yannickoo: Use same style for Search label on uninstall page like on modules page.

Issue #2154775 by er.pushpinderrana, barnettech, kirkkala, InternetDevels | Wim Leers: Fixed In-place editing of title: works, but cursor is invisible.

Issue #2277661 by alexrayu, joelpittet: Fixed Labels with display:block and 'for' attribute have an invisible hit area that is accidently clicked.

Issue #2290849 by fran seva, YesCT: Fixed Regression: Fields missing from translation overview since 'Clarify handling of field translatability'.

Issue #2293807 by sun: Fixed Various migrate_drupal unit base test classes are not abstract and implement getInfo().

Issue #2144263 by fago, yched, alexpott, Berdir, plach, andypost, effulgentsia, michaelfavia: Decouple entity field storage from configurable fields.

Issue #2293063 by Gábor Hojtsy: Fixed Config schema mapping parsing is inconsistently forgiving, does not conform to the interface.

Issue #2293163 by Wim Leers, pwolanin: Fixed MemoryBackend's cache entries may be modified unintentionally thanks to object references.

Issue #1875996 by Xano, tim.plunkett, neclimdul, Rajendar Reddy, Jalandhar: Reconsider naming conventions for derivative classes.

Issue #2239009 by effulgentsia, dawehner: Remove public direct usage of the '_system_path' request attribute.

Issue #2087965 by AndyThornton, neclimdul, tim.plunkett, jhodgdon, pwolanin: Fixed The SearchPluginManager needs to provide an alter hook for its discovery.