Updated changelog.txt with new release date and fixed.
Updated changelog.txt with new release date and fixed.

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