Support string_scanner 1.0.0.

R=alanknight@google.com

Review URL: https://codereview.chromium.org//2089523002 .
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25fe8f8..9802eb1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 3.0.2
+
+* Support `string_scanner` 1.0.0.
+
 ## 3.0.1
 
 * Remove unnecessary dependencies.
diff --git a/pubspec.yaml b/pubspec.yaml
index 0cf276a..c96bc0b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: http_parser
-version: 3.0.1
+version: 3.0.2
 author: "Dart Team <misc@dartlang.org>"
 homepage: https://github.com/dart-lang/http_parser
 description: >
@@ -8,6 +8,7 @@
   collection: ">=0.9.1 <2.0.0"
   source_span: "^1.0.0"
   string_scanner: ">=0.0.0 <0.2.0"
+  string_scanner: ">=0.0.0 <2.0.0"
 dev_dependencies:
   test: "^0.12.0"
 environment: