[Checkins] [zopefoundation/RestrictedPython] 814b4e: Add caches to speed up testing.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/RestrictedPython
  Commit: 814b4e6e0556a6946af67a243703a18af5aeb06b
      https://github.com/zopefoundation/RestrictedPython/commit/814b4e6e0556a6946af67a243703a18af5aeb06b
  Author: Michael Howitz <mh at gocept.com>
  Date:   2018-02-06 (Tue, 06 Feb 2018)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Add caches to speed up testing.