Issue #2154209 by chx: Process refactor: multiple handling.
Issue #1954892 by dawehner, David_Rothstein, tim.plunkett: Replace 'theme callback' and hook_custom_theme() with a clean theme negotiation system.
Issue #1912602 by dawehner, dagmar, tim.plunkett, bdone: Changing view access from 'Permission' to 'Role' causes AJAX error message re getRoles().
Revert "Issue #1912602 by dawehner, dagmar, tim.plunkett, bdone: Changing view access from 'Permission' to 'Role' causes AJAX error message re getRoles()."

This reverts commit 0f17b0ec75024f4e4f6d43c2dc01362b02739ab9.
Issue #2102487 by vijaycs85, ACF: Add back in tab removed in [#1972990] and remove drupal_set_title() in tracker module controllers.
Issue #2157855 by jessebeach | moshe weitzman: Poorly named cache id in toolbar.
Issue #2075185 by Wim Leers: When an entity is in-place edited (i.e. saved), other instances of that entity on the same page are not updated (no propagation).
Issue #2138667 by dawehner: Allow to specify the route name for a path-based view.
- Issue #2156265 by sun: KeyValueFactory is swappable, add an interface and fix type-hints.
Issue #2145041 by tim.plunkett: Allow dynamic routes to be defined via a callback.
Issue #2150621 by damiankloip: Separate applies and build logic for breadcrumb builders.
Issue #1912602 by dawehner, damiankloip, dagmar, tim.plunkett, bdone: Changing view access from 'Permission' to 'Role' causes AJAX error message re getRoles().
Issue #2152735 by chx: Migrate process plugin: extract.
Issue #2154563 by chx:  Migrate process plugin: flatten.
Revert "Issue #2154563 by chx:  Migrate process plugin: flatten."

Oops. :P This is why I should not try and fix docs. :P

This reverts commit 9beae4fe1735281ea34190cd403d44494fb98257.
Issue #2154563 by chx, webchick: Migrate process plugin: flatten.
Issue #2018319 by yched, swentel, pcambra: Remove field_read_field(s)() and field_read_instance(s) in favor of entity_load() and entity_load_multiple_by_properties().
Issue #1976172 by chx, andypost: Comment entity acquired and releases the different locks.
Issue #1874498 by tim.plunkett, dawehner, jibran, benjy: Provide and use API methods for retrieving base plugin and derivative names from block plugin IDs.
Issue #2154589 by Wim Leers: Edit breaks when the entity title is promoted to the page title (discovered by backporting).