Log Message:
Update Cenon to 3.9.6

Notable changes include:
+ New, Images: save as BMP, GIF, JPG, PNG (saves a lot of diskspace)
+ New, ProjectSettings: Units of measure for the document
+ New, Inspector: Inspector Accessory, replacing the Text item
+ Groups can be selected by "Select equal Color" (menu item: Edit \ 
-> Select Color)
+ LayerDetails: new switch to tell a layer whether to be used for
  batch production.
+ Image: selection handling improved
  - select at border or inside according to preferences setting
  - for clipped images: select at or inside clipped area
+ Empty text will be removed, no asterisk '*' when clicking around in text mode
+ Fix, pasting of several layers to one layer keeps order of graphics elements
+ Fix, Image: splitting of clipped image keeps image behind path
+ Fix, Text: creating a text at the right border of the document,
  now sets the correct text box in all zoom steps
+ Fix, Text with Paragraph/Character-Colors is working again
+ Fix, Text: improvements of redisplay after editing text
+ Build Contour: Text offset Y fixed again for vertical centered text
+ Cosmetics in Inspectors, Knobs, etc.
+ Fix, Apple: scrolling without clutter
+ PS-Import: error-tolerant import of PostScript from Windows applications
  like Corel-Draw, Eurocut, etc., that often contain garbage before data.
+ Fix, PS-Import via GhostScript: imported objects get a default color
+ Fix, PS-Import: issues with GhostScript 8.56 and above hopefully solved
  (not tested yet)
+ Fix, Gerber-Export: small fixes like export of open Paths
+ Fix, Apple: position of the contour of mirrored text corrected
+ Fix, Apple: newly created text gets textbox a little heigher to
  be displayed more safely
+ Fix, Apple: workaround - finally it's now possible to save Cenon
  documents compatible with OpenStep and GNUstep
+ Fix, Apple: workaround - it's now possible to save 4 bit images on Apple
+ Fix, Apple: workaround for new color spaces added in OS X >= 10.4
  Some colors turned to black on saving.
+ Apple: search of Cenon files in Library/Application Support/Cenon added
+ Documentation updated