Improved XML Fileformat readability
Fixed Zoom Bug in Mouseover

Zoom XY factor was increasing with increasing zoom, wich led to
mouseover bug
Merge branch 'develop' of https://github.com/vvvv/vvvv-sdk into PolygonEditor
Merge branch 'develop' of https://github.com/vvvv/vvvv-sdk into PolygonEditor
Merge pull request #221 from DominikKoller/PolygonEditor

Polygon editor, improved XML Fileformat readability