Open 3.1.x branch for development

- Update branch alias to 3.1.x-dev in composer.json
- Update README versions table for 3.1.x development

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: f3l1x

README.md

@@ -36,8 +36,8 @@ There is also [thread on Nette Forum](https://forum.nette.org/cs/27287-jquery-fi
 
 | State       | Version  | Branch   | Nette  | PHP     |
 |-------------|----------|----------|--------|---------|
-| dev         | `~2.1.0` | `master` | `2.4`  | `>=7.1` |
-| stable      | `~2.0.3` | `master` | `2.4`  | `>=7.2` |
+| dev         | `~3.1.0` | `master` | `3.2+` | `>=8.2` |
+| stable      | `~3.0.0` | `master` | `3.2+` | `>=8.2` |
 
 ## Development
 

composer.json

@@ -50,7 +50,7 @@
   },
   "extra": {
     "branch-alias": {
-      "dev-master": "2.1.x-dev"
+      "dev-master": "3.1.x-dev"
     }
   }
 }