migrate to null-safety

Author: TimWhiting

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 1.5.0-nullsafety.0
+- Upgraded to null-safe dart
+
 ## 1.4.0
 
 - Introduce `isToday` extension to `Duration`

lib/src/extensions.dart

@@ -88,14 +88,14 @@ extension DateTimeTimeExtension on DateTime {
   }
 
   DateTime copyWith({
-    int year,
-    int month,
-    int day,
-    int hour,
-    int minute,
-    int second,
-    int millisecond,
-    int microsecond,
+    int? year,
+    int? month,
+    int? day,
+    int? hour,
+    int? minute,
+    int? second,
+    int? millisecond,
+    int? microsecond,
   }) {
     return DateTime(
       year ?? this.year,

pubspec.yaml

@@ -1,15 +1,15 @@
 name: time
 description: Type-safe DateTime and Duration calculations, powered by extensions.
-version: 1.4.0
+version: 1.5.0-nullsafety.0
 homepage: https://github.com/jogboms/time.dart
 author: Jogboms <[email protected]>
 
 environment:
-  sdk: '>=2.6.0 <3.0.0'
+  sdk: ">=2.12.0-0 <3.0.0"
 
 dev_dependencies:
-  pedantic: ^1.8.0
-  test: ^1.9.0
+  pedantic: ^1.10.0-nullsafety.3
+  test: ^1.16.0-nullsafety.11
   test_coverage:
     git:
       url: https://github.com/jogboms/test-coverage.git