v15.4
April 29th 2015: Marvin 15.4.27.0
Improvement
Document style handling has been improved and style properties files ha been changed.
April 21th 2015: Marvin 15.4.20.0
Improvement
Structure drawing has been revisited.
    
April 14th 2015: Marvin 15.4.13.0
No changes.
April 8th 2015: Marvin 15.4.6.0
Improvement
MarvinSketch
-     Painting performance has been improved due to revised caching. 
 
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Bug
MarvinSketch
-     Memory limits (128MB) on Mac OSX could cause serious slowdown. 
 
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Editing
-     Aromatic rings within R-groups were drawn with aromatic bond. 
API
-     Setting a rectangle with x and y coordinates other then zero lead to loss the upper and left part of the created image, when MolPrinter.paint(Graphics2D, Rectangle) method call was used. 
 
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