Changes in version 0.1.0 (2023-12-11)                  

New Features

  - estimateParams estimates parameters of exponential and Weibull
    transition hazards using maximum likelihood for a given data set
    after using prepareData.
  - corTrans calculates the correlation between PFS and OS for a given
    set of transition hazards, and corPFSOS estimates this correlation
    for a given data set, optionally with a bootstrap based confidence
    interval.

Bug Fixes

  - ExpSurvOS now returns 0 instead of NaN for large values of t.
  - WeibSurvOS now does not return an error for large values of t.
  - PWCSurvOS now does not return an error for large values of t. It
    also no longer returns values larger than 1. It is significantly
    faster, based on a closed form calculation instead of numerical
    integration.
  - getSimulatedData now also works when there are no transitions from
    progression to death, similarly for getOneClinicalTrial (which now
    warns if there are no such transitions at all).

Miscellaneous

  - PwcOSInt, integrateVector, WeibOSInteg are no longer exported, and
    only used internally.
  - Renamed piecewise constant hazards function to getPWCHazard
    (previously getPCWHazard).

                 Changes in version 0.0.5 (2023-01-27)                  

  - First CRAN version of the package.
  - The package simulates illness-death models with constant, Weibull or
    piecewise constant transition hazards.

New Features

  - Exponentially, Weibull and piecewise exponentially distributed
    survival times.
  - Random censoring and event-driven censoring after a pre-specified
    number of PFS or OS events.
  - Arbitrary number of treatment arms and flexible randomization ratio.
  - Staggered study entry.
  - Derivation of PFS and OS survival functions from transition hazards.