[split] CodeIgniter 3.0.6 Released

CodeIgniter 3.0.6 was released today, with some bug fixes and a minor feature.

Most importantly - it fixes a critical bug where a manually-crafted input could bypass Form Validation rules, so if you're using the Form Validation library, please update your application ASAP!

This is recommended for all users of version 3. Download v3.0.6 now, and we encourage you to read the changelog, and to check the directions for upgrading from a previous version.

Bug fixes address the Form Validation, Session and Migration libraries.
The minor feature is an enhancement to the Cache library.

Can anyone tell me, if yet can I use the Cart library with the version 3.x?

The cart library has been deprecated and will be removed from a future version of CodeIgniter, perhaps as soon as CI3.1.
You *can* use it, but at your own risk. You would be better off finding a better third party cart library for your application.