v21.0.0

Summary

Major refactoring of Mantis CLI with migration to Typer framework, improved command chaining, and comprehensive testing infrastructure.

CLI Framework Migration

• Migrated from argparse to Typer for better CLI experience
• Rich help panels with organized command groups
• Command shortcuts (e.g., b for build, d for deploy)
• Auto-completion support

Command Chaining with + Separator

• New syntax for chaining commands: mantis -e prod build + push + deploy
• Commands with arguments work correctly: mantis -e prod build web api + push + deploy
• Clean separation between commands using + separator

Project Structure

• Split commands into submodules (commands/core.py, commands/images.py, etc.)
• Custom @command decorator with shortcut and panel support
• Pydantic-based config validation (schema.py, config.py)
• Replaced os.path with pathlib throughout

New Features

• rolling-update command for one-by-one container updates
• rename command for container renaming
• Deployment rollback if zero-downtime container is not healthy
• Auto-select config file
• support for single connection
• Environment shortcut resolution
• Parallel build support
• colorful tables
• command doesn't proceed when no mantis config found
• Dry-run mode (-n / --dry-run)

Testing & CI

• Added pytest test suite for command-line parsing
• GitHub Actions workflow for automated testing (Python 3.9-3.12)

Documentation

• Updated README with new -e flag syntax
• Updated examples to use + separator for chaining