AssetBundle can not be imported because the class already exists in this namespace.

fixes #6475

may happen if yii is installed globally.

fixes #6402

Fixes #5494: Added support for specifying a menu header as a configuration array in `yii\bootstrap\Dropdown`

Fixes #6367: Added `yii\gii\generators\crud\Generator` to support customizing view path for the generated CRUD controller

Fixes #5070: Gii controller generator should use controller class name instead of controller ID to specify new controller

Method clientLink no returns data. In the example of the use of manual output clients in the loop you need to use <?php instead of <?=

including support for optimistic locking (#1313)

fixes #5758

fixes #3714
close #6186

was already supported for BETWEEN but not for LIKE

fixes #6164

fixes #5899

- Responsive tables.
- Route is displayed by default, action is available as tooltip.
- Better config table display.
- PHP extensions are sorted alphabetically.

return value would not be a valid array when json encoded after unlink().

fixes #6065

fixes #4745

groovy is now always on in ES 1.3.0

fixes #5662

Fixes #5799: `yii\bootstrap\ButtonGroup::buttons` can take all options that are supported by `yii\bootstrap\Button`

Pass all the button's config array to Button::widget() instead of creating new one item by item. Now allowed to pass in ButtonGroup button's configs any possible attributes(like tagName, encodeLabel, etc).