Add current property to skooma bound elements

Elements bound witht he skooma bind function now get a `current`
property patched in.

skooma.js

@@ -85,10 +85,13 @@ const nameSpacedProxy = (options={}) => new Proxy(Window, {
 
 export const bind = register => transform => {
 	let element
+	const addCurrent = current => Object.defineProperty(current, 'current', {get: () => element})
 	element = transform(...register((...values) => {
-		element = element.replaceWith(transform(...values)) || element
+		const old = element
+		element = addCurrent(transform(...values))
+		old.replaceWith(element)
 	}))
-	return element
+	return addCurrent(element)
 }
 
 export const handle = fn => event => { event.preventDefault(); return fn(event) }

skooma.md

@@ -66,10 +66,6 @@ initial element from the initial state, which will be returned.
 On every state change, the transform ation will be called on the new state to
 generate a new DOM Node, which replace the current one.
 
-If the current node is not in the DOM yet, nothing will happen, and the new node
-is thrown away. This "stale" node will not update until it has been placed in
-the DOM *and* the next state change occurs.
-
 ```js
 bind(register)(html.div)
 // Returns a div element bound to register
@@ -77,6 +73,10 @@ bind(register)(html.div)
 // and html.div is a transformation from input state to a <div> node
 ```
 
+Since references to the bound element can become stale, a `current` property
+is set on every element that returns the current element. This will keep working
+even after several state changes.
+
 ## handle
 
 Since it is common for event handlers to call `preventDefault()`, skooma