Issue #2287223 by tim.plunkett: Use KernelTestBase for config schema tests where possible.
Issue #2290281 by er.pushpinderrana, amitgoyal, joshi.rohit100, nick_schuch: Make plugin type Tip developer info more discoverable
Issue #2016629 by larowlan, neclimdul, sun, alexpott, jibran, ParisLiakos, donquixote, effulgentsia, msonnabaum: Refactor bootstrap to better utilize the kernel.
Issue #2292889 by Berdir, tim.plunkett: Fixed ContextHandler does not expect ContextDefinitionInterface.
Issue #2272467 by ParisLiakos: Remove usages of watchdog() from procedural code.
Issue #2111357 by marcingy, andypost: Get rid of comment_count_unpublished() in favor of CommentStorage method.
Issue #2097123 by slashrsm, roderik, mgifford, pfrenssen, andypost, das-peter | 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 6532718c083cf7a279c3f7540bef04c86be3a1bb.
Issue #2293105 by vijaycs85: MigrateActionConfigSchemaTest duplicates all its code from SchemaCheckTestTrait.
Issue #2291505 by joshi.rohit100: Fixed ParserInterface class contains FetcherInterface documentation.
Issue #2287063 by ParisLiakos, andypost: Fixed Remove remains of t() in watchdog messages.
Issue #2288185 by typhonius: Fixed Typos around the codebase for OPML.
Issue #2216547 by jhodgdon, Berdir: Fill in topic/@defgroup for User system overview.
Issue #2262195 by sun: Fixed Various test classes are missing phpDoc.
Issue #2286681 by alexpott, tim.plunkett: Fixed Make public properties on ConfigEntityBase protected.
Issue #2288783 by tim.plunkett: Add a current theme condition.
Issue #1468582 by mgifford, janusman, edward_or, tstoeckler, alanburke, Schnitzel, dcmouyard, LewisNyman: Add mobile friendly meta tags to the html.tpl.php.
Issue #2293749 by joshi.rohit100: Fixed Use ->url() in Forum module in overview form.
Issue #2294129 by xjm, tim.plunkett: Switch hook_help() to use RouteMatch instead of Request.
Issue #2272279 by joelpittet, chx: Kill RenderWrapper class.