Changes in version 0.2.0 (2025-01-27)                  

Updates across the board, including:

  - Clarified/updated functionality to spp_test().
  - skpss_test() performs the KPSS test with simulated critical values.
  - sim_ts() is a function for simulating time series, mostly used
    internally.
  - sim_df_mod() is a function for simulating Dickey-Fuller statistics,
    mostly used internally.
  - sadf_test() does the (Augmented) Dickey-Fuller test with simulated
    critical values.
  - adf_lag_select() helps the user identify potentially optimal lag
    selection for (Augmented) Dickey-Fuller tests.
  - ur_summary() provides a more straightforward function to summarize
    unit root tests produced in this package.
  - USDICE, tbills, exCopdab, lag_suggests, and money_demand are toy
    data sets now included in this package.

                 Changes in version 0.1.0 (2024-12-20)                  

Initial development offering.