fixed error handling and docs

wrappers.go

@@ -29,6 +29,8 @@ func NoOp[T any]() Subscriber[T] {
 // available memory.
 // This is useful if message publishing is surge prone and message processing is slow or
 // unpredictable (for example: subscriber makes network request).
+// IMPORTANT: messages are considered delivered even it they are still in the buffer which means
+// that buffered subscribers are NOT COVERED by the publishing promise.
 // Message average processing rate must still be higher than the average message publishing rate
 // otherwise it will eventually lead to memory issues. You will need to find a better strategy to
 // deal with such scenario.