Model parameter added to `yii\behaviors\Sluggable::uniqueSlugGenerator` callback
save some function calls on AR insert
fixed broken NOT condition in elasticsearch
improved IDE autocompletion for AR::find()

[ci skip]
Made error message encoding configurable for ActiveForm

Updated yii.activeform.js to use the encode option introduced in #4122.
Updated ActiveForm with new option encodeErrorSummary

fixes #4690, close #4691
Fixes #4607: AR model will throw an exception if it does not have a primary key to avoid updating/deleting data massively
added source map generation so that styling can be debugged easily.
Add rest-rate-limiting.md to translate into Russian
Translated rest-rate-limiting.md into Russian
Fixes #4701
Merge pull request #4695 from damiandennis/sourceMaps

added source map generation so that styling can be debugged easily.
Fixed translation of 'Rate Limiting' in README and related sections
Fixing typo in guide-structure-modules
Merge pull request #4703 from PatchRanger/patch-1

[ci skip] Fixing typo in guide-structure-modules
created a test case to verify #4682
fixed cubrid tests
typo fix
Merge branch 'master' of git://github.com/yiisoft/yii2 into dynamic-model-typo-fix
Merge pull request #4705 from disem/dynamic-model-typo-fix

Dynamic model typo fix
Fixes #4708