fix: remove unnecessary null assertions and bump version to 1.2.0

- Remove unnecessary `!` operators after fixing nullable return types
- Fix style warning: put control body on separate line in prune()
- Update version to 1.2.0 for pub.dev release

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Author: Chinmay-KB

lib/src/case/case.dart

@@ -13,9 +13,9 @@ extension Case on String {
       .mapIndex(
         (word, index) => index == 0
             ? preserveAcronym
-                ? (word!.isUpperCase() ? word : word.toLowerCase())
-                : word!.toLowerCase()
-            : word!.capitalize(),
+                ? (word.isUpperCase() ? word : word.toLowerCase())
+                : word.toLowerCase()
+            : word.capitalize(),
       )
       .toList()
       .join();
@@ -40,7 +40,7 @@ extension Case on String {
 
   /// Converts a string to kebab-case
   String kebabCase() =>
-      words().mapIndex((word, index) => word!.toLowerCase()).join("-");
+      words().mapIndex((word, index) => word.toLowerCase()).join("-");
 
   /// Converts the whole string to lowercase
   @Deprecated('Use .toLowerCase() instead')
@@ -52,7 +52,7 @@ extension Case on String {
 
   /// Converts string to snake_case
   String snakeCase() =>
-      words().mapIndex((word, index) => word!.toLowerCase()).join("_");
+      words().mapIndex((word, index) => word.toLowerCase()).join("_");
 
   /// Converts uppercase characters of a string to lowercase and vice versa
   String swapCase() {

lib/src/chop/chop.dart

@@ -40,7 +40,9 @@ extension Chop on String {
   /// than or equal to the [pruneLength] provided. Handles spaces, tabs, and
   /// other whitespace characters.
   String prune(int pruneLength) {
-    if (length <= pruneLength) return this;
+    if (length <= pruneLength) {
+      return this;
+    }
 
     final result = substring(0, pruneLength);
     // Check if we're in the middle of a word

pubspec.yaml

@@ -1,6 +1,6 @@
 name: stringr
 description: Comprehensive string manipulation plugin for dart. Handles operations on latin, non latin and grapheme clusters alike! Features inspured from VocaJs
-version: 1.1.0
+version: 1.2.0
 homepage: https://github.com/Chinmay-KB/stringr
 
 environment: