Vispy

There have been many changes, which include:

- minor tweaks and bugfixes to gloo
- experimental support for "collections" (batched GL draw calls)
- many new Visuals (Volume, Isocurve, etc.)
- improvements and extensions of the SceneGraph system
- proper HiDPI support
- an experimental native high-level plotting interface vispy.plot

Many changes:

- Added multiple new application backends, including a IPython browser
backend.
- Experimental support for high-level visualizations through
'`vispy.scene`` and ``vispy.scene.visuals``.
- Experimental support for matplotlib plotting through ``vispy.mpl_plot``.
- Loads of bugfixes.

Small fix in the setup script. The buf prevented pip from working.

In this release we focussed on improving and finalizing the object
oriented OpenGL interface ``vispy.gloo``. Some major (backward
incompatible) changes were done. However, from this release we consider
the ``vispy.gloo`` package relatively stable and we try to minimize
backward incompatibilities.

Changes in more detail:

- ``vispy.oogl`` is renamed to ``vispy.gloo``
- ``vispy.gl`` is moved to ``vispy.gloo.gl`` since most users will
use gloo to interface with OpenGL.
- Improved (and thus changed) several parts of the gloo API.
- Some parts of gloo were refactored and should be more robust.
- Much better coverage of the test suite.
- Compatibility with Python 2.6 (Jerome Kieffer)
- More examples and a gallery on the website to show them off.

First release. We have an initial version of the object oriented interface
to OpenGL, called `vispy.oogl`.


\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*