Fix bug # 1643963. Allow & and $ in cite keys for matching bibtex. 
Fix bug # 1643963. Allow & and $ in cite keys for matching bibtex. 
WoLpH/skim,ycaihua/skim-app,ycaihua/skim-app,WoLpH/skim,ycaihua/skim-app,ycaihua/skim-app,ycaihua/skim-app,WoLpH/skim,WoLpH/skim,WoLpH/skim