Fluent-validation

Fix Dutch translation of some errors (1653)
Fix string equality comparison in WithCustomState extension (1658)

Fix incorrect wording in deprecation message for Transform (1613)
Fix ScalePrecision validator being available in intellisense for non-decimal properties.
Expose additional overload of Transform that receives the root object in the transformer.

Introduce new syntax for applying transformations and deprecate the old syntax (1613)

ChildRules now work as expected when inside a ruleset (1597)
Added ImplicitlyValidateRootCollectionElements option to MVC integration (1585)

Support for .NET 5
Improvements to LanguageManager's lazy loading of resources.
Deprecate IStringSource and its implementors. Use delegates instead.
CustomizeValidatorAttribute now works in Razor pages (netcore 3.1 and net 5.0 only) (1541)
RuleSetForClientSideMessagesAttribute now works in Razor pages (netcore 3.1 and net 5.0 only) (1544)
Fixes to Spanish translations.

Fix one of the inheritance validator overloads not working correctly (1528)