Fixes #3581: Added `yii\validators\CompareValidator::type` to support type conversion before comparing values

Fixes #5039: `UniqueValidator` and `ExistValidator` did not respect query conditions added by default scope

Fixes #4938: When `yii\db\ActiveQuery` is used to build sub-queries, its WHERE clause is not correctly generated

Fixes #5001: `yii\rest\CreateAction`, `yii\rest\UpdateAction` and `yii\rest\DeleteAction` should throw 500 error if the model operation returns false without validation errors

Fixes #3511: Dropped `yii.allowAction()` and modified `yii.confirm()` in `yii.js` to support callbacks

Fixes #2914: `ActiveForm::fieldConfig` will be merged recursively with the `$options` parameter in `ActiveForm::field()`

Fixes #2380: `yii\widgets\ActiveForm` will register validation js even if there are not fields inside

Fixes #3240: Added support for assigning an anonymous function to `yii\widgets\ActiveForm::fieldConfig`

When an ID is found to be in both `Application::controllerMap` and `Application::modules`, the former will take precedence

Fixes #4920: `yii\filters\auth\CompositeAuth` should not trigger error as long as one of the methods succeeds
Fixes #3177: `yii\filters\auth\CompositeAuth` will send out challenges from all auth methods

Fixes #4911: Changed callback signature used in `yii\base\ArrayableTrait::fields()` from `function ($field, $model) {` to `function ($model, $field) {`

Added `yii\composer\Installer::postCreateProject()` and modified the syntax of calling installer methods in composer.json [skip ci]

ensure it is one of the input values

fixes #4880

Fixes #4424: Added `inline` and `mimeType` options to all file downloading methods provided in `yii\web\Response`

- do not allow boolean values for integer columns
- use native boolean type with boolean values
- removed workaround that turned out to be wrong when schema and values
  are used correctly. Workaround resulted from wrong usage of boolean
  values before.

fixes #4672

Revert "Fixes #4829: Removed `PARSING_ONLY` from `\yii\rest\UrlRule` to allow creating non-GET URLs for forms and tests"

This reverts commit 4ffbfec9.

Fixes #4829: Removed `PARSING_ONLY` from `\yii\rest\UrlRule` to allow creating non-GET URLs for forms and tests

- If exception is internal it's always returned as HTTP 500 general purpose one.
- Type isn't exposed anymore.