updated CHANGELOG for 2.1.0-SNAPSHOT.
updated CHANGELOG for 2.1.0-SNAPSHOT.

qiangswa/blueprints,wmudge/blueprints,jwest-apigee/blueprints,echinopsii/net.echinopsii.3rdparty.blueprints,nish5887/blueprints,tinkerpop/blueprints,maiklos-mirrors/tinkerpop_blueprints,datablend/blueprints,orientechnologies/blueprints,joeyfreund/blueprints,iskytek/blueprints