updated CHANGELOG
fixed order
Merge pull request #2411 from schmunk42/feature/gii-extension-generator

first draft of the extension generator
Gii extension generator adjustments
Fixed action beforeRun/afterRun calls.
Fixes #2552.
Typo fixes for $user->attributes

print_r($data) should be print_r($user->attributes)
Merge pull request #2553 from xmasterpx/patch-1

Typo fixes for $user->attributes
Update Action.php

Fixed typo in runWithParams
Merge pull request #2554 from ivokund/patch-1

Fix for #2549
minor fix.
Improved behavior support, fixes #2550

call hasMethod() instead of using method_exists
Fixed typos
Fixed typo
Merge pull request #2567 from thiagotalma/master

Fixed typos
Enhanced parsing the accept header.
Use default appliaction language in DatePicker

Fix https://github.com/yiisoft/yii2/issues/2562
Update CHANGELOG.md
Change AssetBundle.register() return type to static

Enable IDE typehints for custom AssetBundle properties (related to #2572).
added unit test for #2568