The %%matlab --gui IPython magic does not produce floating figures properly on Windows.

Can be reproduced with the following code (Jupyter Notebook, MATLAB 2014b, Windows 10 x64):

import pymatbridge as pymat
ip = get_ipython()
pymat.load_ipython_extension(ip)

%%matlab --gui
x = linspace(0, 2*pi, 100);
y = sin(x);
plot(x, y)

Figure 1 does appear in the taskbar, however the figure window itself does not appear and clicking on attempting to activate it by clicking on the taskbar entry does nothing.

I was under the impression this was supposed to work as indicated in #150.