Issue #2746293 by maxocub, Gábor Hojtsy, penyaskito: Migrate content_translation_source when migrating node translations

Issue #2225775 by vasi, quietone, phenaproxima, chx, penyaskito, mikeryan, esclapes, vprocessor, steinmb, Gábor Hojtsy, Marc Angles, bwinett: Migrate Drupal 6 core node translation to Drupal 8

Issue #2560795 by mikeryan, phenaproxima, penyaskito, willwh, benjy: Source plugins have a hidden dependency on migrate_drupal

Issue #2700581 by mikeryan, benjy, heddn, vasi: Destination bundle set in destination plugin, not in process

Issue #2625696 by chx, benjy, alexpott, catch, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities

Revert "Issue #2625696 by chx, alexpott, benjy, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities"

This reverts commit 694994fe.

Issue #2625696 by chx, alexpott, benjy, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities

Issue #2423103 by phenaproxima, quietone, miguelc303, mikeryan: Migration Files for Drupal 7 Content

Issue #2463909 by phenaproxima, mikeryan: Migrations should support non-installed default configurations (templates)

Issue #2460529 by alexpott, chx, phenaproxima: Migrations need to use the configuration entity dependency system

Issue #2466797 by mikeryan, benjy: Rename migration_groups key to avoid confusion with MigrationGroup support

Issue #2306049 by ultimike, benjy, hussainweb: Fixed D6->D8 node migration - Handle nodes with format = 0 ?.

Issue #2333357 by tstoeckler, benjy: Fixed Migrate node_revisions.timestamp into the revision_timestamp field.

Issue #2314289 by benjy: Track result of migrations and use it to properly define migrate_dependencies.

Issue #2293773 by Gábor Hojtsy, alexpott, penyaskito: Fixed migrations use dots in key names - not allowed in config.

Issue #2121299 by andypost, bdone, benjy, penyaskito, chx, claudiu.cristea, damiankloip, gregboggs, InternetDevels, jessehs, jhedstrom, marvil07, mikeryan, pcambra, Xano, YesCT, axoplasm, kgoel, dclavain, jeckman, alvar0hurtad0, Drupali, fastangel, gloob, jhedstrom, joshtaylor, mpgeek, alexpott: Migrate Drupal 6 to Drupal 8