[Checkins] [zopefoundation/BTrees] 7b9e59: Use macpython everywhere.

[GitHub]

  Branch: refs/heads/macpython
  Home:   https://github.com/zopefoundation/BTrees
  Commit: 7b9e5984e7b78c11f24132c23563962d5c311563
      https://github.com/zopefoundation/BTrees/commit/7b9e5984e7b78c11f24132c23563962d5c311563
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2017-01-16 (Mon, 16 Jan 2017)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use macpython everywhere.

Add 3.6 for mac.

See zopefoundation/persistent#59