Improve comments

Source/ASRunLoopQueue.mm

@@ -222,7 +222,9 @@ - (void)releaseObjectInBackground:(id  _Nullable __strong *)objectPtr
 
   _lock.lock();
   auto isFirstEntry = _queue.empty();
-  // Push the pointer into our queue and clear their strong ref.
+  // Push the pointer into our queue and clear their pointer.
+  // This "steals" the +1 from ARC and nils their pointer so they can't
+  // access or release the object.
   _queue.push_back(*cfPtr);
   *cfPtr = NULL;
   _lock.unlock();
@@ -238,10 +240,10 @@ - (void)drain
 {
   @autoreleasepool {
     _lock.lock();
-    // Use move since copying CFTypeRefs = dangerous memory management.
     auto q = std::move(_queue);
     _lock.unlock();
     for (auto ref : q) {
+      // NOTE: Could check that retain count is 1 and retry later if not.
       CFRelease(ref);
     }
   }

examples/CatDealsCollectionView/Sample/AppDelegate.m

@@ -55,3 +55,14 @@ - (void)pushNewViewController
 }
 
 @end
+
+@implementation ASConfiguration (UserProvided)
+
++ (ASConfiguration *)textureConfiguration
+{
+  ASConfiguration *cfg = [[ASConfiguration alloc] init];
+  cfg.experimentalFeatures = ASExperimentalDeallocQueue;
+  return cfg;
+}
+
+@end