MetSizeR 2.0.0

• Removed previous package GUI which relied on dependency ‘gWidgets’ which is no longer maintained.
• Moved package functionality to a Shiny application.
• Improved code performance by updating operations to use ‘Rfast’ package methods where possible.
• Added functionality to handle categorical covariates.
• Increased data sizes accepted by the MetSizeR algorithm.
• Restructured package code for readability - separated functions for different purposes.
• Added a NEWS.md file to track changes to the package.