Hello all

The Envelopes class (a set of static methods) now contains the
'transform(...)' methods for transforming multi-dimensional envelopes
using the mathematical derivative of the transformation function [1].
This is part of the work which was announced in the North America
ApacheConf 2014 [2]. I think this is unique to Apache SIS, as I'm not
aware of an other open source GIS software using function derivatives
for more accurate envelope transformations.

    Martin


[1]
https://builds.apache.org/job/sis-dev/javadoc/org/apache/sis/geometry/Envelopes.html
[2]
http://events.linuxfoundation.org/sites/events/files/slides/2014-04.pdf
slides 22 and 23

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