Context manager / "with" support

[s-celles]

Hello,

it will be nice if pykml could support / provide example of context manager ("with").
It will be much easier to create a kml file with way
http://preshing.com/20110920/the-python-with-statement-by-example/

see http://aerofiles.readthedocs.org/en/latest/api/xcsoar.html
This library is able to output a XML file with way (and that's very convenient)

It's using contextlib https://docs.python.org/2/library/contextlib.html

You might also have a look at https://github.com/leforestier/yattag

Kind regards