metadata, and updated some S3 methods which were producing errors.Change to package structure.
Introduced one master function calibmsm which assess calibration using BLR-IPCW, MLR-IPCW and pseudo-values methodology.
calib_blr changed to calib_blr_ipcw, calib_mlr changed to calib_mlr_ipcw, and calib_blr_ipcw, calib_mlr_ipcw and calib_pv are all changed into internal functions.
Return the pseudo-values used to estimate calibration curves in the output for calib_pv, this allows users to parallelise code when estimating pseudo-values.
Some minor changes to code of internal functions, and introduction of some new internal functions for processes which occur a number of times within the package (for example application of landmarking).
NEWS.md file to track changes to the package.