Implement new 'CanCreate' methods. Fixes #838

Author: bgrainger

src/MySqlConnector/MySqlConnectorFactory.cs

@@ -14,6 +14,12 @@ public sealed class MySqlConnectorFactory : DbProviderFactory
 #if !NETSTANDARD1_3
 		public override DbCommandBuilder CreateCommandBuilder() => new MySqlCommandBuilder();
 		public override DbDataAdapter CreateDataAdapter() => new MySqlDataAdapter();
+
+#if !NET45 && !NET461 && !NET471 && !NETSTANDARD2_0 && !NETCOREAPP2_1
+		public override bool CanCreateCommandBuilder => true;
+		public override bool CanCreateDataAdapter => true;
+		public override bool CanCreateDataSourceEnumerator => false;
+#endif
 #endif
 
 		public MySqlBatch CreateBatch() => new MySqlBatch();