MPIR/MPFR updates
We have updated the Windows binaries of these packages. Now, MPIR is at 2.7.2 and MPFR is at 3.1.5.
We have also built, but are not publishing here, MPIR 3.0 because it does not appear to make a reliable match with MPFR 3.1.5. However, we will supply it if a sensible reason is invoked.