rtiktoken 0.11.0.1

• Update extendr dependency to fix CRAN notes.

rtiktoken 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.

rtiktoken 0.0.7

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

rtiktoken 0.5

• switch to rextendr defaults for configure and makevars

rtiktoken 0.3, 0.4

• fix build for CRAN

rtiktoken 0.2

• fix Notes and Warning for CRAN release

rtiktoken 0.1

• Initial functionality & tests