NEWS

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SHIP 2.1.0

Package metadata and release tooling

• Updated package metadata and maintainer contact information.
• Added GitHub project and issue-tracker URLs.
• Added testthat edition 3 configuration.
• Added release notes and exclusions for generated check and archive files.

Robustness and API

• Added validation for input matrices, covariance targets and gene-group lists.
• Added explicit validation of target types in build.target().
• Handled empty, single-variable and zero-correlation cases safely.
• Returned named components from shrink.estim(), including numeric lambda.

Documentation and tests

• Modernized examples to avoid attach().
• Regenerated namespace and Rd documentation.
• Added regression tests for target construction and shrinkage estimation.