Changes in version 1.0.0                        

Initial CRAN Release

  - Implemented 7 Granger causality tests:
    
      - Test 1: Toda-Yamamoto (1995)
      - Test 2: Single Fourier Granger (Enders & Jones, 2016)
      - Test 3: Single Fourier Toda-Yamamoto (Nazlioglu et al., 2016)
      - Test 4: Cumulative Fourier Granger (Enders & Jones, 2019)
      - Test 5: Cumulative Fourier Toda-Yamamoto (Nazlioglu et
        al., 2019)
      - Test 6: Quantile Toda-Yamamoto (Cai et al., 2023)
      - Test 7: Bootstrap Fourier Granger Causality in Quantiles (Cheng
        et al., 2021)

  - Features:
    
      - Automatic lag order selection via AIC or BIC
      - Optimal Fourier frequency selection
      - Bootstrap inference for robust p-values
      - Support for multivariate systems (all pairwise directions)
      - Quantile causality testing across distribution

  - S3 methods: print(), summary(), plot()

  - Example dataset: caustests_data