Release version 1.0?

Recently, version 0.19 was released. Since the major version number is 0, Julia's package manager flags this as incompatible with 0.18, as if this was a major release. I don't think that's a correct description: This was a backward compatible change that introduced a new feature, i.e. truly a minor release.

Should we release MPI 1.0? The MPI standard is stable, the APIs provided here are stable, and adding new functionality will easily remain possible.