Html converter

packages/notus/example/main.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:notus/convert.dart';
 import 'package:notus/notus.dart';
 
 void main() {
@@ -21,6 +22,9 @@ void main() {
     print(change);
   });
 
+  final a = NotusHTMLCodec().encode(doc.toDelta());
+  print(a);
+
   // Dispose resources allocated by this document, e.g. closes "changes" stream.
   // After document is closed it cannot be modified.
   doc.close();

packages/notus/lib/convert.dart

@@ -5,9 +5,13 @@
 /// Provides codecs to convert Notus documents to other formats.
 library notus.convert;
 
+import 'src/convert/html.dart';
 import 'src/convert/markdown.dart';
 
+export 'src/convert/html.dart';
 export 'src/convert/markdown.dart';
 
 /// Markdown codec for Notus documents.
 const NotusMarkdownCodec notusMarkdown = NotusMarkdownCodec();
+
+const NotusHTMLCodec notusHTML = NotusHTMLCodec();