brew install dmd

[Joel via Digitalmars-d-learn]

but still 2.074.0 (not 74.1)

I'm not that familier brew. I've tried `brew upgrade` and `brew 
update`.

Joels-MacBook-Pro:Testing joelchristensen$ brew upgrade dmd
==> Upgrading 1 outdated package, with result:
dmd 2.074.1
==> Upgrading dmd
==> Downloading 
https://homebrew.bintray.com/bottles/dmd-2.074.1.sierra.bottle.t
######################################################################## 100.0%
==> Pouring dmd-2.074.1.sierra.bottle.tar.gz
==> Using the sandbox
Warning: An old dmd.conf was found and will be moved to 
/usr/local/etc/dmd.conf.old.
🍺  /usr/local/Cellar/dmd/2.074.1: 587 files, 67MB
Joels-MacBook-Pro:Testing joelchristensen$ dmd
DMD64 D Compiler v2.074.0