Unit test for issue 36.

http://code.google.com/p/pygeode/issues/detail?id=36

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branch : release-0.7
In plotvar, make a copy of the x/y axes before modifying the axis values.

Fixes issue 36.

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branch : release-0.7
Re-enable the custom header message for progress bars.

Fixes issue 33.

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branch : release-0.7
Release 0.7.1

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branch : release-0.7
Added tag 0.7.1 for changeset e1d3fe822882

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branch : release-0.7