Add changelog for 2.0.0, 2.0.1, 2.0.2
Add changelog for 2.0.0, 2.0.1, 2.0.2

teddyzeenny/ember-extension,sly7-7/ember-inspector,teddyzeenny/ember-inspector,teddyzeenny/ember-inspector,karthiick/ember-inspector,emberjs/ember-inspector,emberjs/ember-inspector,sly7-7/ember-inspector,sivakumar-kailasam/ember-inspector,karthiick/ember-inspector,cibernox/ember-inspector,maheshsenni/ember-inspector,cibernox/ember-inspector,teddyzeenny/ember-extension,pete-the-pete/ember-inspector,maheshsenni/ember-inspector,pete-the-pete/ember-inspector,sivakumar-kailasam/ember-inspector