it accepts numpy arrays

isn't done, segfaults may sporadically occur.

presence of 'mesa' or 'gallium' does not imply software rendering. And
llvmpipe is fast, so should be treated as hardware.

VNC-like environments.

featdesign.loadDesignMat function

commit 27f214ac
Author: Paul McCarthy <pauld.mccarthy@gmail.com>
Date:   Wed Apr 26 18:20:08 2017 +0100

    Version bump

commit 52f759f0
Author: Paul McCarthy <pauld.mccarthy@gmail.com>
Date:   Wed Apr 26 18:05:11 2017 +0100

    More robust unit tests for async.idle(alwaysQueue=True). Also using a single
    wx.App object for complex reasons

commit d87aae89
Author: Paul McCarthy <pauld.mccarthy@gmail.com>
Date:   Wed Apr 26 18:00:13 2017 +0100

    Adjustment to async.idle(alwaysQueue=True) - now, a second idle call is only
    necessary if the first call came before a wx.App had been created.

lock up (as thousands of TaskThreads were being created, and not destroyed)

block until queue is empty. ImageWrapper has method to access TaskThread. This
is primarily used for testing threaded access to ImageWrapper.

which is primarily for testing.

exists. I hope this doesn't break anything.

was hoping.

interface