Merge pull request #41 from PhantPHP/Fix-date-interval

Fix date interval

Author: lennyrouanet

component/Time/DateInterval.php

@@ -83,7 +83,7 @@ public function isAfter(
     public static function make(
         null|int|string $from,
         null|int|string $to
-    ): self {
+    ): static {
         if (is_string($from) || is_int($from)) {
             $from = new Date($from);
         }

component/Time/DateTimeInterval.php

@@ -83,7 +83,7 @@ public function isAfter(
     public static function make(
         null|int|string $from,
         null|int|string $to
-    ): self {
+    ): static {
         if (is_string($from) || is_int($from)) {
             $from = new DateTime($from);
         }