Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2806651 by stmh, muschpusch, ifrik, tim.plunkett, msti, SenneS: Replace "Delete" block on the block-layout page with "Remove"

Issue #2513534 by tim.plunkett, lokapujya, tedbow, LewisNyman, Manjit.Singh, alexpott, Maninders, Bojhan: Remove the 'disabled' region from Block UI

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2567845 by LewisNyman, davidhernandez: [regression] Fix any visual regressions from moving the System CSS to Classy

Issue #2396937 by legolasbo, Vj, subhojit777, jhodgdon: "Last placed block" color confusing in Block layout page

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

Issue #2512456 by tim.plunkett, legolasbo, MattA, dawehner, googletorp, darol100, Bojhan, webchick, andypost, ivanstegic, larowlan, lauriii, LewisNyman, tkoleary, rickvug, eliza411, lunk_rat, nickrosencrans, stpaultim, Mark LaCroix: Implement the new block layout design to emphasize the primary interaction of placing a block

Issue #2508547 by tim.plunkett, tannerjfco, neclimdul: Placing a block with same machine name of region causes region to disappear in admin UI

Issue #2408463 by thomasfava, MathieuSpil, Manjit.Singh, Vidushi Mehta, LewisNyman: Rewrite entity-meta component inline with our CSS standards

Issue #2422399 by aliyakhan, JCL324, mortendk, skippednote, rpayanm, tadityar, LewisNyman, joelpittet, idebr: Rewrite block.admin.css inline with our CSS standards

Issue #2472323 by dawehner, neclimdul, Crell, kim.pepper, nod_, Wim Leers, larowlan, jibran, pwolanin, catch: Move modal / dialog to query parameters

Issue #2457887 by prateekMehta, stefan.r, rpayanm, alexpott: Use Utility\SafeMarkup class instead of Utility\String for placeholder(), checkPlain(),format() functions

Issue #2030571 by calebtr, daffie, filijonka, YesCT, Thomas Brekelmans, alexpott, Mile23, tadityar, Sharique, tim.plunkett, boztek: Expand Block with methods

Issue #1027074 by blackdog, alansaviolobo, Sutharsan: Add string context to Enabled & Disabled in Shortcut module

Issue #2349991 by fago, Xano, amateescu: Provide a trait for categorizing plugin managers and use it for conditions and actions

Issue #2382543 by rpayanm, ianthomas_uk: Remove usage of drupal_html_class() and drupal_clean_css_identifier()

Issue #2347465 by tim.plunkett, dawehner, cilefen: Convert all instances of #type link/links to convert to use routes.

Issue #2321593 by Temoor: Replace all instances of block_load(), entity_load('block') and entity_load_multiple('block') with static method calls.

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

Issue #2088027 by tim.plunkett | YesCT: Just placed block keeps changed color even after saving the block layout page.

Issue #2208609 by sun, Jalandhar, damiankloip: Move Json utility class into Drupal\Component\Serialization.

Issue #2121175 by Codenator, tim.plunkett, cosmicdreams, jayeshanandani, grom358, ianthomas_uk, Xano: Remove usage of drupal_get_form().

This reverts commit 2cf87103.

Issue #2120871 by andypost, Berdir, amateescu, vladan.me, Xano: Rename EntityListController to EntityListBuilder.

Issue #2203407 by nod_, sun: Replace #attached library array values with provider-namespaced strings.