Changes in version 0.11.0                        

  - Update the underlying tikoken-rs package to v0.11.0, this adds gpt-5
    models etc.
  - Align the rtiktoken package version with the underlying Rust library
    version.

                         Changes in version 0.5                         

  - switch to rextendr defaults for configure and makevars

                         Changes in version 0.4                         

  - fix build for CRAN

                         Changes in version 0.2                         

  - fix Notes and Warning for CRAN release

                         Changes in version 0.1                         

  - Initial functionality & tests

                 Changes in version 0.0.7 (2025-04-14)                  

  - update extendr version and templates to address non API changes and
    symbols testing in R 4.5