Remove .DS_Store files and add .pubignore

.pubignore

@@ -0,0 +1,6 @@
+# Exclude from published package (see https://dart.dev/go/pubignore).
+.DS_Store
+test/.DS_Store
+test/mock/.DS_Store
+coverage/
+coverage_badge.svg

lib/src/helper/Automate.dart

@@ -63,9 +63,7 @@ class Automate {
       if (availableKeys.length == 1) {
         var varContent = entry[key];
         if (varContent is String || varContent is List || varContent is Map) {
-          if (callback != null) {
-            entry[key] = callback(varContent);
-          }
+          entry[key] = callback(varContent);
         }
       } else {
         availableKeys.remove(key);

pubspec.yaml

@@ -1,6 +1,6 @@
 name: contentstack_utils
 description: Utils package for Contentstack-dart
-version: 1.1.1
+version: 2.0.0
 homepage: https://www.contentstack.com
 
 environment: