Decimal values in scientific notation

[KACAH]

Hi!

XML Schema Definition (XSD) does not support scientific notation (1.1234e-3) in xsd:decimal by standart. Some resources doesn't mention scientific notation at all. Some mention the restriction directly.

The decimal separator is always a point (.), and no separation at the thousand mark may be added. There is no support for scientific notation.

Right now str(value) in Decimal builtin type makes the xml value without beeing aware of this restriction. Here is a small fix and couple of tests for this case. The fix uses Python format {:f} method which converts value to Fixed Point string.

[mvantellingen]

Thanks!