The icons are mostly derived work from other icons. As such they are
licensed accordingly to the original license:

    GV: Gael Varoquaux: BSD-like
    Enthought: BSD-like
    Nuvola: LGPL
    Crystal: LGPL

Unless stated in this file, icons are work of enthought, and are released
under BSD-like license.

Files and orginal authors:
----------------------------------------------------------------
                      configure.png | Nuvola
                     fullscreen.png | GV
                      isometric.png | Nuvola
                   origin_glyph.png | Enthought
                       parallel.png | GV
                           save.png | Crystal
                         x-axis.png | Eclipse
                         y-axis.png | Eclipse
                         z-axis.png | Eclipse