Go concurrency simplified. Part 2: Syncing goroutines with sync.WaitGroup

Lisa gives away basketball Worker Bob received basketball Worker Bob started processing basketball... Worker Bob processed basketball Eric gives away teddy bear Worker Bob received teddy bear Worker Bob started processing teddy bear... Worker Bob processed teddy bear Jenny gives away watermelon Worker Bob received watermelon Worker Bob started processing watermelon... Worker Bob processed watermelon Ben gives away box Worker Bob received box Worker Bob started processing box... Worker Bob processed box Zlatan gives away football Worker Bob received football Worker Bob started processing football... Worker Bob processed football Lisa gives away basketball Eric gives away teddy bear Worker Bob received basketball Worker Bob started processing basketball...