Changes in version 2.2.0 (2026-03-06)                  

  - remove Rf_error from c functions
  - improve PROTECT/UNPROTECT handling => now bookkeeping is (should be)
    right whetever the branch

                 Changes in version 2.1.0 (2025-04-18)                  

comply to new CRAN rules

  - replace R's non-API STRING_PTR with STRING_PTR_RO

                        Changes in version 2.0.0                        

New features

  - new function indexthis_vendor to automatically populate a package
    directory with the to_index function. Requires no user intervention
    (except in one case).

Other

  - remove Rcpp dependency

  - remove checking functions to facilitate vendoring

                 Changes in version 1.0.1 (2024-02-01)                  

  - fix bug when a numeric vector considered as int contained NA values
    in a specific branch of the algorithm
  - fix bug: prevent R objects (converted to character within C) to be
    garbage collected
  - add compatibility with R < 4.1.0

                 Changes in version 1.0.0 (2024-01-26)                  

information

  - initial version: only contains the function to_index.