[Swan-commit] Changes to ref refs/heads/master

[D. Hugh Redelmeier]

New commits:
commit 54de93f100fd23191340107eb312326da4a13589
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Sat Feb 2 13:11:40 2019 -0500

    pluto_constants: clarify relationships of enum *_role