gp_endpt_prof renamed
endpoint.profileendpoint.tstab for threshold stability plot,
with associated plot/autoplot methods.npsurvnpmle threshold, expose number of iterationssummary and print for objects
of class npelife now returns restricted mean plus the
threshold. The summary method returns the vector with a
custom implementation, rather than using the method for ecdf.fit_elife now returns a more informative error message
if no data exceed the threshold.fit_elife correctly recover from failure to compute
standard errors for exp modelInitial version