v3.31.1

Changed:

• Do not consider broken releases when checking if local version is up to date. (#1848 via #1849)
• Added rerendering support for additional mpi variants msmpi, mpi_serial, and impi.

Fixed:

• Fixed regression where some variant keys were mismatched during rerendering.

Authors:

• Matthew R. Becker
• Jaime Rodríguez-Guerra