Add changelog entries for 2.0.0 and 2.1.0 releases
Add changelog entries for 2.0.0 and 2.1.0 releases

soundcloud/lhm,civisanalytics/lhm,sj26/lhm,Shopify/lhm,timeplayinc/lhm,sj26/lhm,civisanalytics/lhm,tdeo/lhm,nathanhoel/lhm,timeplayinc/lhm,nathanhoel/lhm,Shopify/lhm,soundcloud/lhm,tdeo/lhm