tried to fix tests for #3472
Issue 3532: Add note about AR default values to upgrade notes
Fixes #3548: Fixed the bug that X-Rate-Limit-Remaining header is always zero when using RateLimiter
Merge pull request #3546 from mikehaertl/master

Issue #3532: Add note about AR default values to upgrade notes
Fixed test break of Html.
Merge branch 'master' of git://github.com/yiisoft/yii2
Fixed allowance for ratelimiter. [skip ci]
Added CodeClimate quality score
Merge pull request #2 from yiisoft/master

merge