• (#1910 via mgravell, fix #1907, #1263)
  • add support for SqlDecimal and other types that need to be accessed via DbDataReader.GetFieldValue<T>
  • add an overload of AddTypeMap that supports DbDataReader.GetFieldValue<T> for additional types
  • acknowledge that in reality we only support DbDataReader; this has been true (via DbConnection) for async forever
• (#1912 via mgravell)
  • add missing AsyncEnumerable<T> QueryUnbufferedAsync<T>(...) and GridReader.ReadUnbufferedAsync<T>(...) APIs (.NET 5 and later)
  • implement IAsyncDisposable on GridReader (.NET 5 and later)