Note: Date changed from August 17 to September 21. We are adding warning messages to the UI, Build Notifications, and API endpoints. When pipelines run that contain deprecated features, a warning message will be returned. APIs impacted will include GET /api/v2/pipelin, GET /api/v2/pipeline/{pipeline-id}, GET /api/v2/project/{project-slug}/pipeline, GET /api/v2/project/{project-slug}/pipeline/mine, and GET /api/v2/project/{project-slug}/pipeline/{pipeline-number}.** Note:** This post consolidate...