v0.7.2

• Fix: Predictions for non-proportional hazards IPD NMA or ML-NMR survival models using aux_regression = ~.trt were incorrectly omitting the treatment effects on the auxiliary parameter(s) in some cases (#43).
• Fix: Calling marginal_effects() for survival outcomes with a single target population previously gave an error.
• Fix: Predictions from exponential models where aux_regression had been specified were giving an error (#44). aux_regression and aux_by have no effect for exponential models since there are no auxiliary (shape) parameters and are ignored, now with a warning.
• Fix: Avoid an error when trying to fit M-spline models combining IPD and AgD in R versions prior to 4.1.0, due to integer coercion of factors by c().