Allow merge of duplicates for list integrity preservation

[GoogleCodeExporter]

I have different comic lists from different friends.
In one list there's all X-men, whil in other just main events.

I would like to keep both lists with all the comics, but remove duplicate 
issues. 
Currently the comic issue appears on both lists because they are different 
files. If I try to remove the comic while removing the duplicate file (@  
MOVEFILES     TRUE
@  REMOVEFROMLIB     TRUE), o
ne of the lists will miss the issue.

I don't know if this is possible. Maybe the plugin should merge the comics 
instead of removing from library?

Thanks, for your effort on this plugin

Original issue reported on code.google.com by kfgodel@gmail.com on 7 Feb 2013 at 7:17

[GoogleCodeExporter]

Ok. I agree with this request... I think it would be specially useful to 
replace fileless comics with their complete version, for instance. But, I will 
not be able to try to do this in the near future... maybe pescuma who did the 
latest versions?

Original comment by theotoco...@gmail.com on 7 Feb 2013 at 10:48