React Popup Component - Modals,Tooltips and Menus — All in one
https://github.com/yjose/reactjs-popup/compare/v2.0.4...v2.0.5
https://github.com/yjose/reactjs-popup/compare/v2.0.3...v2.0.4
Add missed ClassName typescript declaration #90 by @tsurutan
center center
as a valid position #81 by @spsaucier