rev the package version in preparation for publishing

CHANGELOG.md

@@ -1,4 +1,4 @@
-## 0.15.1-dev
+## 0.15.1
 
 - Move `htmlSerializeEscape` to its own library,
   `package:html/html_escape.dart`, which is exported from

README.md

@@ -2,7 +2,7 @@
 [![pub package](https://img.shields.io/pub/v/html.svg)](https://pub.dev/packages/html)
 [![package publisher](https://img.shields.io/pub/publisher/html.svg)](https://pub.dev/packages/html/publisher)
 
-This is a Dart HTML5 parser.
+A Dart implementation of an HTML5 parser.
 
 ## Usage
 

analysis_options.yaml

@@ -1,10 +1,12 @@
 include: package:lints/recommended.yaml
+
 analyzer:
   language:
     strict-casts: true
   errors:
     # https://github.com/dart-lang/linter/issues/1649
     prefer_collection_literals: ignore
+
 linter:
   rules:
     - avoid_dynamic_calls

pubspec.yaml

@@ -1,5 +1,5 @@
 name: html
-version: 0.15.1-dev
+version: 0.15.1
 description: APIs for parsing and manipulating HTML content outside the browser.
 repository: https://github.com/dart-lang/html