Issue #3420986 by kim.pepper, sorlov, larowlan, mstrelan: Convert Condition plugin discovery to attributes

Issue #2815829 by godotislate, tim.plunkett, smustgrave, alexpott, xjm, bircher, paulocs: Adding or editing a block through the UI saves the entity twice

Issue #2852557 by bircher, alexpott, longwave, nedjo, dww: Config export key order is not predictable, use config schema to order keys for maps

Issue #2273381 by clayfreeman, tim.plunkett, andypost, dawehner, EclipseGc, jungle, xjm, alexpott, Berdir: Convert ContextAwarePluginBase to traits

Issue #3081145 by Berdir, andypost, longwave, catch, tim.plunkett, larowlan: Remove BC layers in the Plugin component

Issue #3065586 by Charlie ChX Negyesi, alexpott: ConditionManager::execute() implementation doesn't conform to the interface

Revert "Issue #2852463 by mikelutz, tim.plunkett, heddn, xjm, MegaChriz, joachim, phenaproxima, dawehner, benjifisher: Create a trait to implement \Drupal\Component\Plugin\ConfigurableInterface"

This reverts commit 109dfd58.

Issue #2852463 by mikelutz, tim.plunkett, heddn, xjm, MegaChriz, joachim, phenaproxima, dawehner, benjifisher: Create a trait to implement \Drupal\Component\Plugin\ConfigurableInterface

Issue #2946122 by mikelutz, heddn, tim.plunkett, phenaproxima, alexpott, joelpittet, MegaChriz, joachim, xjm: Deprecate ConfigurablePluginInterface and replace with an interface that doesn't extend DependentPluginInterface

Revert "Issue #2946122 by mikelutz, heddn, tim.plunkett, phenaproxima, alexpott, MegaChriz, joachim: Deprecate ConfigurablePluginInterface and replace with an interface that doesn't extend DependentPluginInterface"

This reverts commit b1f49624.

Issue #2946122 by mikelutz, heddn, tim.plunkett, phenaproxima, alexpott, MegaChriz, joachim: Deprecate ConfigurablePluginInterface and replace with an interface that doesn't extend DependentPluginInterface

Issue #3014949 by tim.plunkett: Deprecate 'context' on Block and Condition plugin annotations in favor of 'context_definitions'

Issue #2949177 by tim.plunkett, samuel.mortenson, mark_fullmer, tedbow, EclipseGc, andypost: Introduce a service that returns filtered plugin definitions

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 #2537732 by Xano, tim.plunkett, gnuget, claudiu.cristea, drunken monkey, bojanz: PluginFormInterface must have access to the complete $form_state (introduce SubFormState for embedded forms)

Issue #2633160 by nicholasThompson, tim.plunkett: Do not fail for missing context if a condition is negated

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

Issue #2614604 by rakesh.gectcr, dawehner: PHPdoc is missing for an overridden function in class ConditionManager

(cherry picked from commit b33ed035)

Issue #2502621 by Pravin Ajaaz, hussainweb, Peacog, jhodgdon, ivanjaros: Replace implement notes with inheritdoc tag

Issue #2375695 by Berdir, EclipseGc, tim.plunkett, Wim Leers, Fabianx, dawehner: Condition plugins should provide cache contexts AND cacheability metadata needs to be exposed

Issue #2422815 by Xano, fgm, tim.plunkett, dawehner: Don't initialize the discovery object in plugin managers, unless needed

Issue #2491155 by mikeburrelljr, Mac_Weber, opdavies: Update drupal.org and kernel.org URLs in core modules (Follow-up to 2489912)

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

Revert "Issue #2196977 by Eric_A, tadityar, Poornima3, jhedstrom: Drupal/filter/Annotation/Filter uses public $module instead of $provider"

Oops. Forgot we're in majors/criticals only mode today.

This reverts commit 1621ae8b.

Issue #2196977 by Eric_A, tadityar, Poornima3, jhedstrom: Drupal/filter/Annotation/Filter uses public $module instead of $provider

Issue #2339151 by EclipseGc, tim.plunkett, Gábor Hojtsy, effulgentsia: Conditions / context system does not allow for multiple configurable contexts, eg. language types

Issue #2246647 by mpdonadio, cilefen, YesCT, tim.plunkett: Rename PluginBag to LazyPluginCollection.

Issue #1182850 by xjm, Stefan Lehmann, jmcintyre, Bojhan: Remove full stops at the end of checkbox options.

Issue #2318281 by tim.plunkett, dawehner | kim.pepper: Provide a standard way to check a plugin is an instance of the required interface.