first working version for pointObject temporalRaster
Merge branch 'integration' of github.com:nens/lizard-client into fritz_point_object_abstract_rasters
added test and docstrings + cleanup
Merge branch 'integration' of github.com:nens/lizard-client into fritz_point_object_abstract_rasters
Merge pull request #69 from nens/fritz_point_object_abstract_rasters

Done: point object abstract rasters