Add sound null safety

CHANGELOG.md

@@ -1,4 +1,4 @@
-## [1.0.0-nullsafety.0] - Null safety
+## [1.0.0] - Null safety
 
 * Migrate to null safety
 

analysis_options.yaml

@@ -1,7 +1,13 @@
 include: package:extra_pedantic/analysis_options_flutter.yaml
 
+analyzer:
+  exclude:
+    # workaround for https://github.com/dart-lang/sdk/issues/42910
+    - 'example/**'
+
 linter:
   rules:
+    - avoid_types_as_parameter_names
     - always_put_control_body_on_new_line
     - always_put_required_named_parameters_first
     - avoid_equals_and_hash_code_on_mutable_classes
@@ -11,10 +17,20 @@ linter:
     - avoid_types_on_closure_parameters
     - avoid_unnecessary_containers
     - camel_case_types
+    - camel_case_extensions
     - omit_local_variable_types
+    - overridden_fields
+    - non_constant_identifier_names
+    - prefer_adjacent_string_concatenation
     - prefer_const_literals_to_create_immutables
     - prefer_constructors_over_static_methods
     - prefer_expression_function_bodies
+    - prefer_single_quotes
+    - prefer_interpolation_to_compose_strings
     - sort_constructors_first
+    - unnecessary_statements
+    - unnecessary_this
     - unnecessary_new
-    - use_key_in_widget_constructors
+    - unnecessary_lambdas
+    - unnecessary_brace_in_string_interps
+    - use_key_in_widget_constructors