Licensing History
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.. note::
    libspatialindex changed from a `LGPL`_ to a `MIT`_ license as of the 1.8.0
    release. For most situations, this should have no impact on the library's
    use, but it should open it up for usage in situations that otherwise might
    have been problematic. Versions of libspatialindex prior to 1.8.0 were
    licensed LGPL 2.0, with the license description on this file. The codebase
    has been been updated, with licensing information replaced in headers and
    source files, to use the MIT license as of the 1.8.0+ release.
    
    This change was made to support the inclusion of software depending on 
    libspatialindex in static linking-only environments such as embedded systems 
    and Apple's iOS. libspatialindex versions prior to 1.8.0 will continue to 
    live on as LGPL software, and developers can continue to contribute to them 
    under terms of that license, but the main development effort, and ongoing 
    maintenance, releases, and bug applications, will move forward using the 
    new MIT license at http://github.com/libspatialindex/libspatialindex

.. _`LGPL`: http://opensource.org/licenses/lgpl-2.1.php
.. _`MIT`: http://opensource.org/licenses/MIT



License (MIT)
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::

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    DEALINGS IN THE SOFTWARE.