[IO-500] IOR version 3.2.0 release candidate 1

Dear I/O benchmarking community, A release candidate for IOR version 3.2.0, the next major release of the benchmark, is now available for download from the IOR GitHub repository: https://github.com/hpc/ior/releases/tag/3.2.0rc1 It will be the first release of IOR to also include the mdtest benchmark and includes a number of new features and back-end options. This release branch has been in testing for over three months and should be quite stable. Please download it, give it a test, and report any bugs or issues you may encounter. It is our goal to release 3.2.0 before the end of the year, so any feedback you care to provide about this release candidate before then would be greatly appreciated! Sincerely, The IOR maintainer team