xtbhst 1.0.0

• Initial CRAN release
• Implements bootstrap slope heterogeneity test (Blomquist & Westerlund, 2015)
• Features:
  • Block bootstrap for panel data
  • Standard and adjusted Delta statistics
  • Support for partialling out control variables
  • Cross-sectional averages for handling cross-sectional dependence
  • Diagnostic plots for bootstrap distributions