Second and last preview for new Linq To DB version

• new API for optimistic lock delete and update operations
• support for C# nullable reference types annotations in mapping for columns and single-record associations
• FOR UPDATE/SHARE hints helpers for MySQL and MariaDB
• A lot of performance improvements
• Breaking changes to fluent mapping configuration
• Breaking changes to context mapping schema edit and System.Data.Linq.Mapping / System.ComponentModel.DataAnnotations.Schema mappings support
• Breaking changes to IMetadataReader interface signatures and behavior
• new UseBeforeConnectionOpened and UseAfterConnectionOpened context configuration extensions to simplify custom connection configuration for users
• many other improvements and bugfixes

Release notes

Nugets

API diff since v5.0.0-preview.1