v1.12.0

• [db11d7f, ee0526c] don't call setState on unmounted components #29
• [7210254] update placeholder height and width if inner component changes it size. Hint: This fix requires ResizeObserver to be available. For older browsers like Internet Explorer 11 you would need to install a polyfill by hand. Otherwise, this fix will not have any effect. #28
• [c726928] add official support for node 14
• Updates to dependencies, including an update to react-viewport-utils v1.12.1