Update editorconfig

.editorconfig

@@ -27,6 +27,7 @@ insert_final_newline = false
 # Organize usings
 dotnet_separate_import_directive_groups = true
 dotnet_sort_system_directives_first = true
+dotnet_diagnostic.IDE0005.severity = error
 file_header_template = unset
 
 # this. and Me. preferences
@@ -122,7 +123,7 @@ csharp_style_unused_value_assignment_preference = discard_variable:suggestion
 csharp_style_unused_value_expression_statement_preference = discard_variable:silent
 
 # 'using' directive preferences
-csharp_using_directive_placement = outside_namespace:silent
+csharp_using_directive_placement = outside_namespace
 
 #### C# Formatting Rules ####