Keep track of inserted/removed for every upgraded element

The code that counts the inserted/removed state must not be gated on callbacks since the attached and detached
callbacks can be set without its the twin, which would break the counting code.

Fixes #89

src/Observer.js

@@ -151,7 +151,7 @@ function _inserted(element) {
   // TODO(sjmiles): when logging, do work on all custom elements so we can
   // track behavior even when callbacks not defined
   //console.log('inserted: ', element.localName);
-  if (element.attachedCallback || (element.__upgraded__ && logFlags.dom)) {
+  if (element.__upgraded__) {
     logFlags.dom && console.group('inserted:', element.localName);
     if (inDocument(element)) {
       element.__inserted = (element.__inserted || 0) + 1;
@@ -193,7 +193,7 @@ function removed(element) {
 function _removed(element) {
   // TODO(sjmiles): temporary: do work on all custom elements so we can track
   // behavior even when callbacks not defined
-  if (element.detachedCallback || (element.__upgraded__ && logFlags.dom)) {
+  if (element.__upgraded__) {
     logFlags.dom && console.group('removed:', element.localName);
     if (!inDocument(element)) {
       element.__inserted = (element.__inserted || 0) - 1;