Add changelog for 1.4.0
Add changelog for 1.4.0

bower/bower,mattpugh/bower,Blackbaud-EricSlater/bower,ThiagoGarciaAlves/bower,rajzshkr/bower,haolee1990/bower,gorcz/bower,fernandomoraes/bower,thinkxl/bower,Jeremy017/bower,dreamauya/bower,gronke/bower,M4gn4tor/bower,rlugojr/bower,Teino1978-Corp/bower,jodytate/bower,XCage15/bower,fewspider/bower,yuhualingfeng/bower,jisaacks/bower,twalpole/bower,Jinkwon/naver-bower-cli,omurbilgili/bower,liorhson/bower,Backbase/bower,skinzer/bower,lukemelia/bower,TooHTooH/bower,sanyueyu/bower,Connectlegendary/bower,DrRataplan/bower,magnetech/bower,yinhe007/bower,vladikoff/bower,DevVersion/bower,prometheansacrifice/bower,akaash-nigam/bower,unilynx/bower,cnbin/bower,jvkops/bower,Teino1978-Corp/Teino1978-Corp-bower,amilaonbitlab/bower,msbit/bower,adriaanthomas/bower,return02/bower,pwang2/bower,wenyanw/bower,supriyantomaftuh/bower,mex/bower,PimsJay01/bower,xfstudio/bower,cgvarela/bower,watilde/bower,pertrai1/bower