gsDesign2 1.1.2

New features

• The gs_update_ahr() function is now available for efficacy and futility
  boundary update based on blinded estimation of treatment effect (#370).

Bug fixes

• Fix the accrual parameters bugs in gs_design_wlr() depending on npsurvSS (#344, #356).
• Fix gs_design_ahr() to incorporate information fraction driven design when number of analyses >= 4 (#358).

Improvements

• Zero failure rate in some but not all intervals is acceptable as input (#360).
• Study with duration > 100 units are executable when event accrual is slow (#368).

Documentation

• A new vignette
  introducing how to do the boundary update is available (#278, #364, #366).
• A new vignette
  bridging gsDesign2 to the 6 test types of gsDesign is available.
• The pkgdown website is re-organized to providing better view for users (#341).

Testing

• Independent testing of as_gt() is added (#337).
• Restructure tests to make them self-contained (#347).