chore: set max SDK version to <3.0.0, and adjust other dependencies (dart-lang/markdown#229)

pkgs/markdown/CHANGELOG.md

diff --git a/pkgs/markdown/CHANGELOG.md b/pkgs/markdown/CHANGELOG.md
index 6cea33e..752a48d 100644
--- a/pkgs/markdown/CHANGELOG.md
+++ b/pkgs/markdown/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.0.2
+
+* Set max SDK version to `<3.0.0`, and adjust other dependencies.
+
 ## 2.0.1
 
 * Require Dart 2.0.0-dev.

pkgs/markdown/lib/src/version.dart

diff --git a/pkgs/markdown/lib/src/version.dart b/pkgs/markdown/lib/src/version.dart
index 3c1cf56..954db0b 100644
--- a/pkgs/markdown/lib/src/version.dart
+++ b/pkgs/markdown/lib/src/version.dart
@@ -1,2 +1,2 @@
 /// The current version of markdown.
-final String version = '2.0.1';
+final String version = '2.0.2';

pkgs/markdown/pubspec.yaml

diff --git a/pkgs/markdown/pubspec.yaml b/pkgs/markdown/pubspec.yaml
index 420af6b..f9611eb 100644
--- a/pkgs/markdown/pubspec.yaml
+++ b/pkgs/markdown/pubspec.yaml
@@ -1,26 +1,27 @@
 name: markdown
-version: 2.0.1
-author: Dart Team <misc@dartlang.org>
+version: 2.0.2
+
 description: A library for converting markdown to HTML.
+author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/markdown
 
 executables:
   markdown:
 
 environment:
-  sdk: '>=2.0.0-dev <2.0.0'
+  sdk: '>=2.0.0-dev <3.0.0'
 
 dependencies:
-  args: '^1.0.0'
-  charcode: '^1.1.0'
+  args: ^1.0.0
+  charcode: ^1.1.0
 
 dev_dependencies:
-  build_runner: ^0.8.2
+  build_runner: ^0.9.1
   build_web_compilers: ^0.4.0
-  collection: '^1.2.0'
-  expected_output: '^1.1.0'
+  collection: ^1.2.0
+  expected_output: ^1.2.1
   html: '>=0.12.2 <0.14.0'
-  js: '^0.6.1'
-  path: '^1.3.1'
-  test: '>=0.12.42 <2.0.0'
-  yaml: '^2.1.8'
+  js: ^0.6.1
+  path: ^1.3.1
+  test: ^1.2.0
+  yaml: ^2.1.8