0.7.2.md

v0.7.2: Error handling improvements

🐛 Bug fixes

• Fix mdcmd to exit with non-zero code when embedded commands fail
• Commands that fail no longer crash with stack traces
• Failed commands are reported gracefully with exit code and output
• Other commands continue to execute in concurrent mode

📦 Dependencies

• Bump utz requirement to >=0.21.1 (includes fix for text() handling None)

🧪 Tests

• Add tests for command failure handling
• Add tests for mixed success/failure scenarios
• Add tests to ensure no uncaught exceptions on errors

This release fixes a critical issue where mdcmd would exit with code 0 even when commands failed, breaking shell scripts using set -e.