Prepare for v0.0.16 release. (#549)

Author: DanTup

packages/devtools/CHANGELOG.md

@@ -1,3 +1,6 @@
+## 0.0.16 - 2019-04-17
+* Reduce the minimum Dart SDK requirements for activating DevTools to cover Flutter v1.2.1 (Dart v2.1)
+
 ## 0.0.15 - 2019-04-16
 * Warn users when they should be using a profile build of their application instead of a debug build.
 * Warn users using Microsoft browsers (IE and Edge) that they should be using Chrome to run DevTools.

packages/devtools/lib/devtools.dart

@@ -5,4 +5,4 @@
 /// The DevTools application version.
 // Note: when updating this, please update the corresponding version in the
 // pubspec.
-const String version = '0.0.15';
+const String version = '0.0.16';

packages/devtools/pubspec.yaml

@@ -3,7 +3,7 @@ description: A suite of web-based performance tooling for Dart and Flutter.
 
 # Note: when updating this version, please update the corresponding entry in
 # lib/devtools.dart.
-version: 0.0.15
+version: 0.0.16
 
 author: Dart Team <[email protected]>
 homepage: https://github.com/flutter/devtools