Add spec for new keyCapture modifier handling
Add spec for new keyCapture modifier handling

alpheios-project/arethusa,fbaumgardt/arethusa,fbaumgardt/arethusa,PonteIneptique/arethusa,alpheios-project/arethusa,latin-language-toolkit/arethusa,Masoumeh/arethusa,alpheios-project/arethusa,fbaumgardt/arethusa,PonteIneptique/arethusa,Masoumeh/arethusa,latin-language-toolkit/arethusa