3.9.0

Complete commits list: CarbonPHP/carbon@3.8.6...3.9.0

Summary:

• Add isNowOrFuture() and isNowOrPast() methods by @AndrewMast in CarbonPHP/carbon#27
• Add ReturnTypeWillChange to createFromTimestamp by @cdburgess in CarbonPHP/carbon#22

New Contributors

• @cdburgess made their first contribution in CarbonPHP/carbon#22
• @AndrewMast made their first contribution in CarbonPHP/carbon#27