Merge pull request #1230 from ngyikp/fix-flow-0-82

Fix Flow typing for Flow v0.82

src/preact.js.flow

@@ -2,7 +2,7 @@
 
 import { createElement, cloneElement, Component, type Node } from 'react';
 
-declare var h: createElement;
+declare var h: typeof createElement;
 
 declare function render(vnode: Node, parent: Element, toReplace?: Element): Element;