rev to a dev version

pkgs/json_rpc_2/CHANGELOG.md

diff --git a/pkgs/json_rpc_2/CHANGELOG.md b/pkgs/json_rpc_2/CHANGELOG.md
index d28d50f..e64acb6 100644
--- a/pkgs/json_rpc_2/CHANGELOG.md
+++ b/pkgs/json_rpc_2/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 3.0.2-dev
+
+* Address a few analysis hint violations.
+* Populate the pubspec `repository` field.
+
 ## 3.0.1
 
 * Fix a bug where a `null` result to a request caused an exception.

pkgs/json_rpc_2/pubspec.yaml

diff --git a/pkgs/json_rpc_2/pubspec.yaml b/pkgs/json_rpc_2/pubspec.yaml
index 69ec384..48bc0b6 100644
--- a/pkgs/json_rpc_2/pubspec.yaml
+++ b/pkgs/json_rpc_2/pubspec.yaml
@@ -1,5 +1,5 @@
 name: json_rpc_2
-version: 3.0.1
+version: 3.0.2-dev
 description: >-
   Utilities to write a client or server using the JSON-RPC 2.0 spec.
 repository: https://github.com/dart-lang/json_rpc_2