When processing an array of elements, don't add any that are already included in the list.
When processing an array of elements, don't add any that are already included in the list.

minrk/mathjax-component,ManrajGrover/MathJax,minrk/components-mathjax,anusornc/MathJax,Edraak/MathJax,nvp2211/MathJax,cheerfulstoic/MathJax,cben/MathJax,Edraak/MathJax,nvp2211/MathJax,jinntrance/mathjax,Ivanwangcy/MathJax,minrk/components-mathjax,jeremykenedy/MathJax,anueshenxing/MathJax,dpvc/MathJax,thomasjm/MathJax,cheerfulstoic/MathJax,mcanthony/MathJax,thomasjm/MathJax,physikerwelt/MathJax,minrk/mathjax-component,thomasjm/MathJax,thomasjm/MathJax,jinntrance/mathjax,jeremykenedy/MathJax,Ivanwangcy/MathJax,ManrajGrover/MathJax,perseoq/MathJax,GerHobbelt/MathJax,cben/MathJax,perseoq/MathJax,GerHobbelt/MathJax,thomasjm/MathJax,anueshenxing/MathJax,mcanthony/MathJax,anusornc/MathJax,wikimedia/MathJax