dfa 1.2.0

Upstream author metadata: Devon Govett <devongovett@gmail.com>
Upstream repository at the npm release gitHead:
https://github.com/devongovett/dfa/tree/3f5e603e5082caedabefefdf53e8a6ca3111e966
Published source package:
https://registry.npmjs.org/dfa/-/dfa-1.2.0.tgz

The upstream package.json and README declare MIT. The published package
does not include a separate LICENSE file or year-bearing copyright notice.
The declarations are preserved here; standard MIT permission terms are
provided in MIT-LICENSE.txt. This does not change upstream licensing.