8.3.1.45. v4.0.0-pre4

commit a64c88ec02c8768f2c4f0ce8f6eae523d354dc48
Author: Victor Lowther <victor.lowther@gmail.com>
Date:   Wed Jul 31 13:58:26 2019 -0500

    Make sure version injection does not have to rely on git

M   tools/build-one.sh
M   tools/version.sh
M   version.go

End of Note