[Kst-plot/kst] 561b5d: Add a 'subplot' method to pykst.

[Barth Netterfield]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: 561b5d5d9da14d10f3872416a5e5faad63280fe3
      https://github.com/Kst-plot/kst/commit/561b5d5d9da14d10f3872416a5e5faad63280fe3
  Author: Barth Netterfield <netterfield at astro.utoronto.ca>
  Date:   2016-08-27 (Sat, 27 Aug 2016)

  Changed paths:
    M pyKst/demo/plot_layout.py
    M pyKst/pykst.py

  Log Message:
  -----------
  Add a 'subplot' method to pykst.

Allows for convenient placement of plots in a grid
using a syntax similar to matplotlib.