sdk constrtaint bump; dart2 options cleanup

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a2d63c..faa7a25 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.2.0+3
+
+- Max SDK version bumped to <3.0.0.
+
 ## 0.0.1
 
 - Initial version

analysis_options.yaml

diff --git a/analysis_options.yaml b/analysis_options.yaml
deleted file mode 100644
index a10d4c5..0000000
--- a/analysis_options.yaml
+++ /dev/null
@@ -1,2 +0,0 @@
-analyzer:
-  strong-mode: true

pubspec.yaml

diff --git a/pubspec.yaml b/pubspec.yaml
index 0e0845f..d2e6d4d 100755
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,9 +1,9 @@
 name: plugin
-version: 0.2.0+2
+version: 0.2.0+3
 author: Dart Team <misc@dartlang.org>
 description: Support for building plugins.
 homepage: https://github.com/dart-lang/plugin
 environment:
-  sdk: '>=1.0.0 <2.0.0'
+  sdk: '>=1.0.0 <3.0.0'
 dev_dependencies:
   test: any