Tweak CHANGELOG.md
merge upstream/master
remove period from 'create by Stagehand.'
fix wrong change from README.md
Merge pull request #183 from sunglim/changelog

Tweak CHANGELOG.md
move stagehand over to using the usage GA library
Merge pull request #185 from devoncarew/devoncarew_use_usage

move stagehand over to using the usage GA library