Fixed support for gml multi curve geometry

v2.0.9

2.0.8

v2.0.8

Raised minor version to 2.0.8

Added some Geometry types to parsing

Parsing capabilities for GenericCityObjects where refined. More GML geometry types are now supported (e.g., GML::LineString).

Initial release after rewrite

This is the first release after a somewhat bigger rewrite of the whole library. It is not fully API-compatible to the old library (pre 1.0) since it employs some C++ 11 features such as lambda expressions and smart pointers.