Microsoft.FeatureManagement Updates

The packages associated with this release are

• Microsoft.FeatureManagement 2.4.0
• Microsoft.FeatureManagement.AspNetCore 2.4.0

Enhancements

• Added option to throw when attempting to evaluate a missing feature. (#140)
• IFeatureManagementSnapshot is now thread-safe. (#141)

Bug fix

• FilterAliasAttribute now uses the proper parameter name in an ArgumentNullException if alias is null.