Changes in version 0.1.0                        

  - Initial CRAN-ready release.
  - Provides heteroskedasticity-based and proxy-based instrumental
    variable local projection estimators for event-study settings.
  - Includes impulse response plotting helpers, weak instrument testing,
    Kalman-filter shock extraction, and simulation utilities.
  - Adds an introductory vignette with a worked end-to-end example.