Changes in version 0.2.0 (2025-11-15)                  

  - Added phrase_counts() for surface phrase frequency extraction.
  - Added disk caching with cwf_cache_enable() / cwf_cache_disable().
  - Added full “Usage & Best Practices” vignette with usage guidelines.
  - Improved DESCRIPTION with clearer database reference and URLs.
  - Updated examples and documentation.
  - Added initial testthat tests for word_counts() and phrase_counts().
  - Minor stability and messaging improvements.