MVMR 0.4.7

• qhet_mvmr() now uses the estimated heterogeneity parameter (the minimiser) rather than the minimised objective value when constructing the model weights. This corrects the effect estimates, which will differ from previous versions.
• snpcov_mvmr() now returns correct covariance matrices when the genetic instrument data are supplied as a matrix rather than a data frame.
• strength_mvmr() and pleiotropy_mvmr() now select the covariance-matrix calculation based on whether gencov is a list, fixing a division-by-zero that occurred when a gencov list for exactly two variants was supplied.
• ivw_mvmr() no longer emits a spurious warning about fixing the covariance at zero; the gencov argument does not affect the IVW estimates and is retained only for interface consistency.
• mvmr() no longer fits the same weighted regression twice.
• Tidied format_mvmr() internal column naming.