Bump to 2.1.3 with link fix (dart-lang/markdown#278)

pkgs/markdown/CHANGELOG.md

diff --git a/pkgs/markdown/CHANGELOG.md b/pkgs/markdown/CHANGELOG.md
index 97740d3..265b537 100644
--- a/pkgs/markdown/CHANGELOG.md
+++ b/pkgs/markdown/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 2.1.3
+
+* Do not encode HTML in link URLs. Also do not encode HTML in link text when
+  `encodeHtml` is false (e.g. when used in Flutter).
+
 ## 2.1.2
 
 * Drop support for Dart 2.0.0 through 2.1.0.

pkgs/markdown/lib/src/version.dart

diff --git a/pkgs/markdown/lib/src/version.dart b/pkgs/markdown/lib/src/version.dart
index 5e5a029..d09e279 100644
--- a/pkgs/markdown/lib/src/version.dart
+++ b/pkgs/markdown/lib/src/version.dart
@@ -1,2 +1,2 @@
 // Generated code. Do not modify.
-const packageVersion = '2.1.2';
+const packageVersion = '2.1.3';

pkgs/markdown/pubspec.yaml

diff --git a/pkgs/markdown/pubspec.yaml b/pkgs/markdown/pubspec.yaml
index 39bef73..aa021fe 100644
--- a/pkgs/markdown/pubspec.yaml
+++ b/pkgs/markdown/pubspec.yaml
@@ -1,5 +1,5 @@
 name: markdown
-version: 2.1.2
+version: 2.1.3
 
 description: A library for converting markdown to HTML.
 author: Dart Team <misc@dartlang.org>