changes in coxohw.f90, removed Visual Fortran comments
delete licence file, spell checking, add link to git, etc.
add testthat
add information on the sample size in print and summary
only observations with missing values in variables mentioned in the formula are deleted.
add option clusterid in coxphw
citation and JSS example code is updated due to JSS publication 2018
plotshape function replaced by predict.coxphw and plot.coxphw.predict, print.coxhpw.predict added.
coxphw.control with arguments iter.max, maxhs, xconv, gconv, maxstep, round.times.to, add.constant, pc, pc.time, normalize, and fp.iter is added.
coxphw renamed argument print into verbose. maxit is now renamed as iter.max as in the survival package. Usage of * in the formula of coxphw is now consistent to other R packages like lm. Variable names with dots and underlines also work now. offset argument was moved to formula.
plotw function is now renamed to plot.coxphw.
linear.predictors in coxphw were corrected if coxphw.control(pc = TRUE).
Issue with factors in coxphw is solved.
Issue in coxph in survival (simultaneous use of tt and cluster) is solved.
All fp-transformation functions are declared as internal functions.
Add concordance probability to summary.
Add functions: coef, concord, plotshape, wald.
Include data: gastric and biofeedback.
Appearance of plotw plots is slightly changed.
Input is simplified: instead of the options AHR, AHR.norobust, ARE, and PH, templates are used now.