TEASER Release v0.2.0

Besides several bug fixes and structural improvements this releases provides following features:

• full Python 2.7/3.4 support
• full AixLib Building model export for AixLib version https://github.com/RWTH-EBC/AixLib/releases/tag/v0.2.1
• CityGML and CityGML EnergyADE export
• updated documentation for Archetype Buildings