add Ian Lee to contributors, move contributors list into its own file to keep the text for PKG-INFO ascii only fixes #9 bump version to 0.7

Minor test case additions & lxml warning 
Thanks 8-)

pretty print)

Bugfix for wrong style. oops, thanks :)

Bugfix to handle big files 
8-) thanks a lot

Add kml xmlns if no namespace/prefix is used for kml

 add the ability to add untyped extended data / name value pairs 
thanks :)