Export only when references are modified

[pprw]

According to the timestamps of my export BibTex file, AutoZotBib exports references even when there are no modification of the collection. When I launched Zotero, my BibTex file is re-created.

It should be nice if AutoZotBib would export only when the user modifies actually references (and not when users visit their references collection).

For informations, I'm using Zotero 4.0.12, AutoZotBib 0.51 and my Zotero is synchronized between computers (which could perhaps explain why AutoZotBib "believes" falsely there are changes : starting sync update, even when ineffective, could modify timestamps of references and so produces AutoZotBib export but it's just a guess).