Dagger 0.13: First-class monorepo support, private modules, a new CLI command, and more

Dagger 0.13 introduces several key features and improvements, including first-class monorepo support, private modules hosted on private Git servers, and a new CLI command for calling the core API directly from the command-line. The release also includes performance enhancements, reliability fixes, and improved Python workflow. Key benefits of these features include faster and more convenient use of Dagger in large monorepos, enhanced security and flexibility when working with private modules, and simplified integration of private custom modules into pipelines.