Cannot exclude directories in v.0.6.5

[GoogleCodeExporter]

I would like to request a feature that users can set excluded subdirectory 
under a directory for backup. For my case, I don't hidden directories in my 
home directory to be backed up. So I want somewhere to set up the exclusion of 
directories. But I looked around and didn't find such a place. 

The directory exclusion feature has been missed since v. 0.5. I enjoyed it in 
v.0.4 and would like it to come back. 

Original issue reported on code.google.com by forrest....@gmail.com on 21 Nov 2010 at 10:12