Add native UPSERT/MERGE functionality with SQL Server, PostgreSQL, MySQL, Oracle, SQLite, DB2, Firebird, Snowflake optimization, INSERT IGNORE support, RawSql UpdateColumns, and comprehensive test coverage - #8

'GeneratorExtensions.GetQuoter(IMigrationGenerator)' is obsolete

'GeneratorExtensions.GetQuoter(IMigrationGenerator)' is obsolete

'ColumnBase' is obsolete: 'Use ColumnBase<TTypeMap> instead. Going forward, column models must have a db-specific type map model.'

XML comment has cref attribute 'IQuoter' that could not be resolved

XML comment has cref attribute 'IQuoter' that could not be resolved

'GeneratorExtensions.GetQuoter(IMigrationGenerator)' is obsolete

'GeneratorExtensions.GetQuoter(IMigrationGenerator)' is obsolete

'ColumnBase' is obsolete: 'Use ColumnBase<TTypeMap> instead. Going forward, column models must have a db-specific type map model.'

ProjectReference '/home/runner/work/fluentmigrator/fluentmigrator/src/FluentMigrator.Runner.SqlServer/FluentMigrator.Runner.SqlServer.csproj' was resolved using '.NETFramework,Version=v4.8' instead of the project target framework '.NETStandard,Version=v2.0'. This project may not be fully compatible with your project.