feat(view-compiler): add element to processAttributes

BREAKING CHANGE - If by some rare chance you are using the
processAttributes hook (which I don’t think is publicly documented
yet…mainly because of things like this) we have changed the signature
to include the node that the attributes are related to.

processAttributes(compiler, resources, node, attributes,
elementInstruction);

src/view-compiler.js

@@ -294,7 +294,7 @@ export class ViewCompiler {
       type = resources.getElement(node.getAttribute('as-element') || tagName);
       if (type) {
         elementInstruction = BehaviorInstruction.element(node, type);
-        type.processAttributes(this, resources, attributes, elementInstruction);
+        type.processAttributes(this, resources, node, attributes, elementInstruction);
         behaviorInstructions.push(elementInstruction);
       }
     }