Changes in version 0.1.0                        

  - Initial CRAN release.
  - Added causify() and sc() for creating sufficient-component cause
    models.
  - Added causal_pie() and causal_pie_necessary() for visualizing causal
    pies.
  - Added components(), necessary_causes(), and sufficient_causes() for
    querying cause data.
  - Added theme_causal_pie() and theme_causal_pie_grid() for minimalist
    plot themes.