0.16.0 release candidate 1

This is the first release candidate for Scipy 0.16.0. It is a source-only release. See https://github.com/scipy/scipy/blob/maintenance/0.16.x/doc/release/0.16.0-notes.rst for the release notes.

If no new issues are reported for this release, it will become the final 0.16.0 release. Issues can be reported via Github or on the scipy-dev mailing list (see http://scipy.org/scipylib/mailing-lists.html).