Bug fix

Update update.rdf

Merge pull request bwiernik#17 from bwiernik/prefs

Update preferences for FF60 update

Update version

Merge branch 'master' of https://github.com/bwiernik/zotero-shortdoi

Allow autoretrieval of long DOIs

Make error tags customizable

And fix duplicate error windows

Update version

Switch tags to better icons

Fix update bug