version 2.8.1
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	* Fixed bug #153837: Internal viewer vs. other application question is 
          asked for files that internal viewer can't even handle.
	* Do not ask whether to use the internal viewer when there is a 
	  registered application for the file type.
	* Fixed bug #151113: crash trying to open zip file for extraction
	* Fixed bug #152900: Multiple file/folder drag and drop needs to be 
          improved.