1.2.0

Mostly internal changes, but it does adjust widget DOM and css styling techniques. Consumers who had significant styling adjustments to the popup list may need to do some mild migrations.

• Add a class rw-popup-container to widget animation container
• move popup placement to css, so that it can be tweaked by widget consumers
• Added the prop duration to all widgets with a popup to control animation speed
• refresh and update the docs page
• bugs and typos