tidyrates 0.0.2

Dependency changes

• Remove the epitools dependency. Direct and indirect rate calculations now use internal statistical kernels and the base R package stats.
• Preserve public arguments, output columns, grouping behavior, and the numerical methods previously supplied by epitools, including non-finite results for degenerate inputs.

Bug fixes

• Fix rate_adj_indirect() to calculate reference event rates and the reference crude rate from .std instead of .data. Adjusted rates and confidence limits can therefore change; crude rates are unchanged.

Documentation and tests

• Document the 95% Fay-Feuer gamma intervals for direct adjustment and the 95% log-normal intervals for indirect adjustment. Update the package description, README, vignette, and generated R help.
• Add numerical regression tests against historical results, edge cases, grouping and custom-column tests, and tests verifying the use of .std.
• Run the R CMD check workflow on the dev branch.

Known limitations

• Age strata are matched by row position, not by their labels. Supply reference age groups in the same row order as each group in .data.
• Indirect adjustment with one stratum yields non-finite results. Degenerate inputs and these pre-existing limitations should be considered before interpreting results.

tidyrates 0.0.1

• Functions for rate computation with direct and indirect adjustment.