Fluent-validation

Add extensions for injecting child validators using the ASP.NET Core Service Provider.
WithLocalizedMessage is deprecated. Use the overload of WithMessage that takes a Func instead.
Implement RuleFor(...).ForEach(...) as an alternative to RuleForEach

Resolved issue where clientside validation was incorrectly generating metadata for rules with shared conditions.
ScalePrecisionValidator now has a public method in the fluent interface.
Fix placeholder names in ScalePrecisionValidator for consistency.
Updates to Portuguese (Brazil) translations.

Fix the same issue from 8.1.1 but for async conditions.
Fix issue where shared When/Unless conditions didn't execute correctly when used with RuleForEach.

Added RuleSetsExecuted property to ValidationResult.
Fix issue with shared condition cache incorrectly caching when used with RuleForEach.

Added format support for message placeholders.
Added support for overriding indexers for collection rules.
Allow ErrorCode to be used to override localization key in the Language Manager.
Additional error details are now shown in the ShouldNotHaveValidationErrorFor test extension.
Conditions defined with root-level When/WhenAsync/Unless/UnlessAsync are now only executed once (instead of once for each rule).
Support Otherwise method chained from root-level When/WhenAsync/Unless/UnlessAsync.
Minor wording changes to default English error messages.
Added Skip property to MVC5's CustomizeValidatorAttribute to bring parity with AspNetCore and WebApi integration.
Japanese translation of the default error messages.
Remove type constraint on the OverridePropertyName overload that takes an expression.

Fix clientside property comparison validation adaptor in ASP.NET Core integration.