selection: rename linesContainer to svg and add the mouseUp event to window, fix issue when releasing outside of browser window
selection: rename linesContainer to svg and add the mouseUp event to window, fix issue when releasing outside of browser window

thorikawa/TweenTime,mcanthony/TweenTime,idflood/TweenTime,thorikawa/TweenTime,idflood/TweenTime,mcanthony/TweenTime