Added 1.6.3 release notes to read me
Added 1.6.3 release notes to read me

Cocoanetics/DTCoreText,iwakevin/DTCoreText,AmberWhiteSky/DTCoreText,depl0y/DTCoreText,AmberWhiteSky/DTCoreText,canyu9512/DTCoreText,sujeking/DTCoreText,wweiradio/DTCoreText,z8927623/DTCoreText,gnr/DTCoreText,gsempe/DTCoreText,niklassaers/DTCoreText,gsempe/DTCoreText,artifacts/DTCoreText,artifacts/DTCoreText,Akylas/DTCoreText,qskycolor/DTCoreText,gank0326/CoreTextWithHTML,rain1988/DTCoreText,cnbin/DTCoreText,wangmb/DTCoreText,sidslog/DTCoreText,bnickel/DTCoreText,depl0y/DTCoreText,artifacts/DTCoreText,i-miss-you/DTCoreText,z8927623/DTCoreText,wweiradio/DTCoreText,rgregg/DTCoreText,liuslevis/DTCoreText,sujeking/DTCoreText,SanjoDeundiak/DTCoreText,holgersindbaek/DTCoreText,jingchunYuan/DTCoreText,thusfresh/DTCoreText,davbeck/DTCoreText,canyu9512/DTCoreText,rgregg/DTCoreText,jingchunYuan/DTCoreText,Akylas/DTCoreText,davbeck/DTCoreText,wlisac/DTCoreText,SanjoDeundiak/DTCoreText,wangmb/DTCoreText,cnbin/DTCoreText,liulinjian/DTCoreText,DanGe42/DTCoreText,niklassaers/DTCoreText,iwakevin/DTCoreText,rain1988/DTCoreText,openresearch/DTCoreText,liulinjian/DTCoreText,wlisac/DTCoreText,i-miss-you/DTCoreText,devontech/DTCoreText,gank0326/CoreTextWithHTML,zulip/DTCoreText,pivotaltracker/DTCoreText,esteluk/DTCoreText,barz/DTCoreText,programming086/DTCoreText,appunite/DTCoreText,wweiradio/DTCoreText,artifacts/DTCoreText,goodheart/DTCoreText,appunite/DTCoreText,shuoshi/DTCoreText,bnickel/DTCoreText,yaoxiaoyong/DTCoreText,Torsph/DTCoreText,1yvT0s/DTCoreText,w2592583/DTCoreText,Cocoanetics/DTCoreText,shuoshi/DTCoreText,goodheart/DTCoreText,Cocoanetics/DTCoreText,jjamminjim/DTCoreText,qskycolor/DTCoreText,DanGe42/DTCoreText,barz/DTCoreText,CoderJWYang/DTCoreText,devontech/DTCoreText,Esdeath/DTCoreText,1yvT0s/DTCoreText,youprofit/DTCoreText,thusfresh/DTCoreText,xiaoyanit/DTCoreText,zulip/DTCoreText