New in this release
-------------------
- The ``process`` class acquired new methods
``vmin, vmax, vmean, vvar, vstd`` to perform summary operations
across values, for each time point and path (14).
- A piecewise constant process constructor was added as the
``piecewise`` function (9); it replaces, and improves upon,
the private ``_piecewise_constant_process`` (undocumented,
not part of the API), now deprecated.
Bug-fixes
---------
- An incompatibility issue of the ``process`` class with
numpy versions >= 1.16.0 (11, 12) was solved.
- A bug in the ``out`` parameter of ``process`` methods
``pmin, pmax, tmin, tmax`` (10, 13) was fixed.
Improvements
------------
- The behavior of the ``process`` attribute ``interp_kind``
was documented in more detail (14).
- There were several minor improvements to the testing
and maintenance tools, and to the testing suite (14, 15).
Changes
-------
- No backward incompatible changes were made against the stated API.
- Note however that code relying on the ``out`` parameter of the
mentioned ``process`` methods might be in need of fixing as well.