This milestone aims to bring significant improvements to the XRTpy python package, version 0.4.0, by introducing enhanced abundance features, unifying the API for both aiapy and xrtpy, implementing EA (Effective Area) and temperature response methods on the Channel object, updating the documentation, and ensuring comprehensive test coverage.

• Updated XRTpy Print/Return Information for Abundance:
  Enhance user experience by providing informative print/return statements when utilizing the abundance feature within XRTpy.
  Display clear information to users about the specific abundance model used in calculations.
• API Unification for aiapy and xrtpy:
  Design a unified API structure that caters to both aiapy and xrtpy, promoting consistency and ease of use across both packages.
• Effective Area and Temperature Response Methods on Channel Object:
  Extend the functionality of the Channel object to include effective area and temperature response methods.
• Documentation Update:
  Update the existing documentation to reflect the new features, changes, and improvements introduced in v0.4.0.
• Test Update:
  Strengthen the test suite to cover the newly introduced features, ensuring robustness and reliability of the package.
  Conduct thorough testing to identify and address any potential issues or bugs.

This milestone will be reviewed and updated over the next few weeks.