This commit was manufactured by cvs2svn to create branch 'numerics'.
Add some numeric tests
Added some testing for numeric type support
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Some more testing for numerics support
Numerics support
Numerics support. Clean up some flotsam, also.
Convert doubles to_python.
Remove unimplemented Tuple constructors, and add some others for convenience.
Numerics support.
Factor out exception-handling. Add numerics support.
Fix description of ComputedAttribute feature for accuracy.