Issue #2811357 by alexpott, mattlt, jibran: Fix CHANGELOG.txt for 8.2.0 to remove paragonie/random_compat update

(cherry picked from commit 434a9699)

Issue #2795845 by effulgentsia, xjm, dawehner, cilefen, alexpott, timmillwood, Gábor Hojtsy, Wim Leers, chx, Cottser, catch, vaplas: Add changelog for Drupal 8.2.0

(cherry picked from commit 380e763f)

Issue #2807705 by alexpott, dawehner, aburke626: FormattableMarkup::placeholderFormat() can result in unsafe replacements

(cherry picked from commit 652ab4a0)

(cherry picked from commit 88ba3b96)

Issue #2782309 by samuel.mortenson, martin107: Refactor File and Image related image field creation logic into a new trait

(cherry picked from commit 66741e36)

Issue #2734663 by klausi, jibran, dawehner, naveenvalecha: Update deprecation message for old KernelTestBase in simpletest

(cherry picked from commit 49076af2)

Issue #2801851 by shashikant_chauhan, Yogesh Pawar, phenaproxima, mikeryan: Remove system-of-record APIs from migrate

(cherry picked from commit 6416f459)

Issue #2783079 by david_garcia, alexpott: DRUPAL-SA-CORE-2016-003 Completely broke IIS drupal deployments

(cherry picked from commit fe1eb450)

Revert "Issue #2662844 by penyaskito, dawehner, catch: cache.backend.chainedfast misbehaves in some situations"

This reverts commit 4eb87a26.

(cherry picked from commit 4a53d2f4)

(cherry picked from commit 98e6f462)

Issue #2485385 by phenaproxima, quietone, alexpott, mikeryan, Berdir, blazey, xjm, hussainweb, catch, heddn, benjy: Move highwater field support to the source plugin, and do not expose its internals on MigrationInterface

(cherry picked from commit 4259a06c)

Issue #2805213 by agoradesign: Incorrect documentation for EntityAccessControlHandler::checkFieldAccess()

(cherry picked from commit 5681fbee)

Issue #2804525 by shashikant_chauhan, joachim: EntityTypeManager should mention hook_entity_type_build()

(cherry picked from commit 380bc5a4)

(cherry picked from commit 3b80c5a5)

Issue #2706405 by heddn, edysmp, davidparedes21, mikeryan, phenaproxima: File migrations *always* copy in files, even if the files were off-line copied to destination

(cherry picked from commit cb9b01246be2624188a2b0dd7e3e816220d766be)

(cherry picked from commit c8025066)

(cherry picked from commit e014859c)

Issue #2776235 by mikeryan, alexpott: Cached autoloader misses cause failures when missed class becomes available

(cherry picked from commit 82304ed9)

(cherry picked from commit 3d7c5304)

Issue #2791119 by phenaproxima, quietone, chx, mikeryan, benjy: Write meaningful Migrate source tests

(cherry picked from commit 27b61a9b)

Issue #2804675 by alexpott, hideaway: Tests using TestDatabase class are stuck in an infinite loop in Windows (8.2.0-rc2 only)

(cherry picked from commit 0972996e8ceabfbf8f849e500d47babbf381dc1a)

Issue #2567715 by marthinal, hgoto, jpd4nt, mr.baileys, Wim Leers, alexpott: #markup generated by #pre_render callbacks do not get processed by ensureMarkupIsSafe()

(cherry picked from commit 397b680a)

Issue #2738567 by jmuzz, mtift, claudiu.cristea, dawehner, samuel.mortenson: Add test trait for drupalGetTestFiles and drupalCompareFile

(cherry picked from commit 97b2c764)

(cherry picked from commit 2a3217ce)

Issue #2684567 by gnuget, chx, heddn, vasi, mikeryan: Requiring a migration w/ a source plugin using a generator fatals

(cherry picked from commit ae1f599d)

Issue #2773733 by claudiu.cristea, klausi, dawehner: Fix AssertLegacyTrait::assert(No)Text to handle html encoded strings (part 3)

(cherry picked from commit d70e577a)

(cherry picked from commit ffde2454)

(cherry picked from commit 0fe04b15)

(cherry picked from commit c9c12c59)

(cherry picked from commit 918731d6)

Issue #2785589 by tedbow, nod_, droplet, drpal, alexpott, Wim Leers, xjm: Fix js and jsdoc of outside-in module

Issue #2798609 by hardik.p, shashikant_chauhan, naveenvalecha, joachim, daffie: field.purge.inc points to php.net delete function

(cherry picked from commit 4338fa0b)

(cherry picked from commit 59da7397)

Revert "Issue #2763787 by nerdstein, rlhawk, slasher13, therealssj, TravisCarden: Upgrade random_compat to latest version"

This reverts commit 7feb65ba.

(cherry picked from commit 1c940d72)

Issue #2773185 by Wim Leers, effulgentsia, dawehner: Fix nits in \Drupal\rest\Entity\ConfigDependencies

(cherry picked from commit 713d4e98)

(cherry picked from commit f39d8fb9)