Test against Lightning Core 4.x (Drupal core 8.7.x).

.travis.yml

config/dynamic/views.view.moderation_history.yml

lightning_workflow.module

modules/lightning_scheduler/lightning_scheduler.module

...ng_scheduler/tests/fixtures/BaseFieldMigrationTest.php.gz

...ning_scheduler/tests/src/Functional/MigrationTestBase.php

tests/packages.yml

tests/src/Functional/ModerationHistoryTest.php

tests/travis.php.ini