gsDesign2 1.1.7

Documentation

• The vignette discussing the futility boundary design is finalized (#583, thanks to @LittleBeannie)
• An example calculating expected events for multiple strata is added (#597, thanks to @LittleBeannie)
• The documentation of common parameters is unified by @inheritparams (#598, thanks to @LittleBeannie)
• A contributing guide with overview of package architecture is added (#596, thanks to @jdblischak)

Programming improvements

• The S3 classes are re-factored (#584, thanks to @jdblischak)
• The input parameters are not displayed when printing the objects (#586, thanks to @jdblischak)
• text_summary() supports design objects with spending functions specified as character strings (#587, thanks to @yihui).
• The attribute assignment uninteger_is_from is fixed in to_integer() (#591, thanks to @jdblischak)
• text_summary() is updated to support fixed designs from gs_design_ahr() (#592, thanks to @jdblischak)