rcens 0.2.0

• Added the rcenscomp family for complex censoring and observation schemes.
• Preserved the original rcensT1, rcensT2, rcensT3, rcensI, rcensIfix, rcuref, and rcurefT3 implementations unchanged.
• Added interval, current-status, delayed-entry, hybrid, generalized-hybrid, progressive, adaptive-progressive, covariate-dependent, informative-frailty, and competing-risk generators.
• Added Weibull rate, proportional-hazards, censoring, and shared-frailty helpers under the manuscript parameterization.
• Added consistent rcenscomp objects, print/summary/data-frame methods, calibration routines using common random numbers, tests, documentation, and the complex-censoring vignette.