[RELEASE] -  new version:  '1.2.1-SNAPSHOT'.
[RELEASE] -  new version:  '1.2.1-SNAPSHOT'.

mzagar/zipkin,prat0318/zipkin,thelastpickle/zipkin,srijs/zipkin,mt0803/zipkin,prat0318/zipkin,wuqiangxjtu/zipkin,jstanier/zipkin,gneokleo/zipkin,hydro2k/zipkin,mt0803/zipkin,coursera/zipkin,yshaojie/zipkin,srijs/zipkin,mzagar/zipkin,rjbhewei/zipkin,mzagar/zipkin,rocwzp/zipkin,jfeltesse-mdsol/zipkin,hydro2k/zipkin,jstanier/zipkin,Yelp/zipkin,wuqiangxjtu/zipkin,betable/zipkin,betable/zipkin,Yelp/zipkin,hydro2k/zipkin,jfeltesse-mdsol/zipkin,prat0318/zipkin,jamescway/zipkin,lqjack/zipkin,rocwzp/zipkin,srijs/zipkin,yshaojie/zipkin,Yelp/zipkin,mt0803/zipkin,mzagar/zipkin,Yelp/zipkin,jamescway/zipkin,thelastpickle/zipkin,gneokleo/zipkin,betable/zipkin,rjbhewei/zipkin,mt0803/zipkin,rocwzp/zipkin,thelastpickle/zipkin,lqjack/zipkin,gneokleo/zipkin,prat0318/zipkin,rjbhewei/zipkin,yshaojie/zipkin,betable/zipkin,lqjack/zipkin,jamescway/zipkin,yshaojie/zipkin,jfeltesse-mdsol/zipkin,hydro2k/zipkin,rocwzp/zipkin,wuqiangxjtu/zipkin,coursera/zipkin,coursera/zipkin,coursera/zipkin,jamescway/zipkin,thelastpickle/zipkin,rjbhewei/zipkin,jfeltesse-mdsol/zipkin,jstanier/zipkin,lqjack/zipkin,srijs/zipkin,gneokleo/zipkin,wuqiangxjtu/zipkin,jstanier/zipkin