ETRep Version 1.2.1

* Updates
- The package description has been updated to include the published version of  
  the paper *"The Mean Shape under the Relative Curvature Condition"*  
  in the Journal of Computational and Graphical Statistics  
  (DOI: <doi:10.1080/10618600.2025.2535600>).

- The plotting issue raised by macOS users due to the lack of native OpenGL  
  support has been fixed by introducing the helper functions  
  `etrep_open3d()` and `etrep_show3d()`.  
  These functions allow plotting to fall back to a WebGL viewer  
  and open the scene in a browser when a native rgl device is not available.

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ETRep Version 1.1.0

* Updates
- The package description and function documentation have been updated for improved clarity and precision.
- The function **elliptical_Tube_Euclideanization()** added:
  - Enables the Euclideanization of elliptical tubes for downstream analysis and computations.

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ETRep Version 0.1.0

* First CRAN release
-Date of publication: 2024-11-04

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