error handling

Sentry, feature-complete and packaged up for low-volume deployments and proofs-of-concept

The MegaMart Checkout Software Module enhances the online shopping experience by ensuring accurate cost calculation, stock verification, age compliance, and error handling. Real-time calculations, intuitive UI, and robust error handling optimize user experience. Testing includes acceptance and unit tests, CI/CD pipelines, and static analysis tools for code review. Implementation involves Python coding, unit testing using PyUnit, Test-Driven Development and bug fixing.

Some rust macros to simplify common error handling patterns