Hide textarea off-screen when not composing
Hide textarea off-screen when not composing

Fixes #209

Tyriar/xterm.js,xtermjs/xterm.js,cjordog/NRLWebsite,xtermjs/xterm.js,xtermjs/xterm.js,cjordog/NRLWebsite,cjordog/NRLWebsite,akalipetis/xterm.js,Tyriar/xterm.js,akalipetis/xterm.js,akalipetis/xterm.js,Tyriar/xterm.js,Tyriar/xterm.js,sourcelair/xterm.js,xtermjs/xterm.js,sourcelair/xterm.js,cjordog/NRLWebsite,sourcelair/xterm.js,akalipetis/xterm.js,xtermjs/xterm.js,Tyriar/xterm.js,sourcelair/xterm.js