improve caret moving using up/down/left/right
improve caret moving using up/down/left/right

danchr/tinymce,endjin/tinymce,ikuchmin/tinymce,shilpi230/tinymce,Razzwan/tinymce,sjbufton/tinymce,dziemian007/tinymce,MediehusetTek/tinymce,jtark/tinymce,henrythewasp/tinymce,1099511627776/tinymce,tinymce/tinymce,VioletLife/tinymce,enfold/tinymce,rednose-public/tinymce,pmpl-5/tinymce,danielpunkass/tinymce,TeamupCom/tinymce,Zimbra/tinymce,support-dot-com/tinymce,MediehusetTek/tinymce,aduth/tinymce,bsuh/tinymce,fhchina/tinymce,M4R7iNP/tinymce,leofeyer/tinymce,kencheung/tinymce,gencer/tinymce,rxl194/tinymce,ice8lue/tinymce,1099511627776/tinymce,henrythewasp/tinymce,support-dot-com/tinymce,ice8lue/tinymce,aduth/tinymce,tinymce/tinymce,simachewh/tinymce,ETSI-CTI/TinySpecMCE,nikolas/tinymce,Razzwan/tinymce,endjin/tinymce,blakewallan/tinymce,Zimbra/tinymce,Kindling/tinymce,kencheung/tinymce,rbecheras/tinymce,fhchina/tinymce,danielpunkass/tinymce,blakewallan/tinymce,ChristophKaser/tinymce,simachewh/tinymce,enfold/tinymce,gencer/tinymce,nbcp/tinymce,sjbufton/tinymce,howanghk/tinymce,shilpi230/tinymce,Kindling/tinymce,adaptiffdesigns/tinymce,FernCreek/tinymce,rxl194/tinymce,rednose-public/tinymce,gabixdev/tinymce,fashionsun/tinymce,fashionsun/tinymce,ETSI-CTI/TinySpecMCE,fillabs/TinySpecMCE,bsuh/tinymce,jashua212/tinymce,FernCreek/tinymce,jtark/tinymce,VioletLife/tinymce,ChristophKaser/tinymce,adaptiffdesigns/tinymce,howanghk/tinymce,pmpl-5/tinymce,sachgits/tinymce,leofeyer/tinymce,rbecheras/tinymce,nbcp/tinymce,dziemian007/tinymce,nikolas/tinymce,jashua212/tinymce,M4R7iNP/tinymce,danielpunkass/tinymce,danchr/tinymce,tinymce/tinymce,fillabs/TinySpecMCE,ikuchmin/tinymce,gabixdev/tinymce,sachgits/tinymce,TeamupCom/tinymce,FernCreek/tinymce