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

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