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work around small float inaccuracies for maxz of the bounding box at the height of the model (for DropCutter)


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removed a shadow from an auxiliary GUI element


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improved the debian packaging based on suggestions from Benoît Knecht <benoit.knecht@fsfe.org> on the debian-mentors mailing list


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added export of the rendered text as SVG


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* skew (e.g. for cursive text)
* line spacing
* horizontal pitch


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reduced initialization time for Points and Lines (these initializations were quite expensive when loading CXF fonts)


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added support for "reverse" arcs in font definitions


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added an "update" method to the ProgessCounter to allow GUI updates without incrementing the counter


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reduce the number of cone layers to one (sufficient and resource-friendly)


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DropCutter (ODE and triangle collision detection) now go up to safety height, if the model is higher than the bounding box
* before: cut through the model at maxz


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optional visualization of directions (for contour models, toolpaths and triangle's normals)


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 * see a blog post of Anders Wallin for more details: http://www.anderswallin.net/2010/10/adaptive-sampling-drop-cutter/
simplified the "max_height" detection


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(it is still not finished)


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fixed Exception if no model is loaded


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added a fix for using multiprocessing on multi-core Windows systems (using the standalone executable created by PyInstaller) 


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added a "get_area" method for triangles


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