[ci skip] update changelog finally, sorry
[ci skip] update changelog finally, sorry

marcinkubicki/web-component-tester,Polymer/web-component-tester,fearphage/web-component-tester,fearphage/web-component-tester,Polymer/tools,hvdb/web-component-tester,sankethkatta/web-component-tester,hvdb/web-component-tester,marcinkubicki/web-component-tester,marcinkubicki/web-component-tester,sankethkatta/web-component-tester,hypnoce/web-component-tester,hvdb/web-component-tester,Polymer/tools,hypnoce/web-component-tester,Polymer/web-component-tester,Polymer/web-component-tester,sankethkatta/web-component-tester,fearphage/web-component-tester,Polymer/tools,Polymer/tools