Unitxt 1.5.2

What's Changed

• Update version to 1.5.1 by @elronbandel in #497
• Fix templates for qa datasets by @elronbandel in #501
• Add multidoc2dial dataset in its abstractive and extractive forms by @arielge in #504
• attach summarization cards to the summarization task by @arielge in #506
• Prepare load_dataset and evaluate api to fit the paper by @elronbandel in #510
• enhanced UI by @Roni-Friedman in #511
• Update version to 1.5.2 by @elronbandel in #512

Full Changelog: 1.5.1...1.5.2