Adding helper method. Swap(ref a, ref b).
Fix: Cleaning up Chunk<T> method.
Adding DateTime extension. date.AsUtcKind().
Adding string extension. string.ParseAsUtc().
Adding IEnumerable extension. ToHashSet<T>().
Adding decimal extension. decimal.TruncateTo().
Adding int extension. int.Round().
Adding TimeSpan extensions. int.Days(), int.Hours(), etc.
Fix: Fixing Shuffle test case.
Adding IEnumerable extension. HasCount<T>(int count).
Fix: Fixing XOrDefaultInternal() method.