v1.7.1b1

What's Changed

• Feat: Warn when doing local torch elastic training with nnodes > 1 by @fg91 in #1697
• Fix config of user facing execution parameters in spawning elastic tasks by @fg91 in #1677
• Union | optional return types supported by @kumare3 in #1703
• Fail registration if output isn't Optional when using map tasks with min_success_ratio < 1 by @pingsutw in #1709
• Add bigquery project and location to metadata by @pingsutw in #1702
• Generate decks at local execution by @pingsutw in #1699
• Improve task type hint by @pingsutw in #1711
• Detect upstream nodes from container nested promises by @wild-endeavor in #1707
• Add Iterator Transformer by @pingsutw in #1710
• Always a default image and streamline image handling serialize vs package by @wild-endeavor in #1610
• Remove ensure literal by @wild-endeavor in #1706

Full Changelog: v1.7.1b0...v1.7.1b1