Add 1.2.0 changelog

CHANGELOG.md

@@ -1,5 +1,21 @@
 # Changlog
 
+## 1.2.0
+
+Release for Dart 2.8.1 with Linter v0.1.114
+
+Min SDK is `2.8.0-dev.16.0`
+
+- Enable [`avoid_redundant_argument_values`](https://dart-lang.github.io/linter/lints/avoid_redundant_argument_values.html)
+- Enable [`missing_whitespace_between_adjacent_strings`](https://dart-lang.github.io/linter/lints/missing_whitespace_between_adjacent_strings.html)
+- Enable [`no_runtimeType_toString`](https://dart-lang.github.io/linter/lints/no_runtimeType_toString.html)
+- Enable [`unnecessary_string_interpolations`](https://dart-lang.github.io/linter/lints/unnecessary_string_interpolations.html)
+- Enable [`unnecessary_raw_strings`](https://dart-lang.github.io/linter/lints/unnecessary_raw_strings.html)
+- Enable [`unnecessary_string_escapes`](https://dart-lang.github.io/linter/lints/unnecessary_string_escapes.html)
+- Enable [`leading_newlines_in_multiline_strings`](https://dart-lang.github.io/linter/lints/leading_newlines_in_multiline_strings.html)
+
+- Enable [`use_key_in_widget_constructors`](https://dart-lang.github.io/linter/lints/use_key_in_widget_constructors.html) for packages
+
 ## 1.2.0-dev.d28.2
 
 Raise min sdk to `2.8.0-dev.16.0`