Added unit tests for element.py
Added unit tests for element.py
Added documentation for all methods in Element
Merge branch 'master' of https://github.com/AnkhMorporkian/lemon-operating-language
Fixed problem where sometimes Element would not contain self.root due to exceptions being raised. Set default value of false, unit tests now work.
Merge remote-tracking branch 'origin/master'
Fixes to Element, consistency in __children.