prep the release for 2.10 dev sdk (#147)

This is in preparation for the actual 2.10 dev sdk release. This package needs to be published and pinned in flutter simultaneously with that release.

.travis.yml

@@ -1,33 +1,33 @@
 language: dart
 
 dart:
-- dev
+- preview/raw/2.10.0-0.2-dev
 
 jobs:
   include:
     - stage: analyze_and_format
       name: "Analyze lib/"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: dartanalyzer --fatal-warnings --fatal-infos lib/
     - stage: analyze_and_format
       name: "Analyze test/"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: dartanalyzer --enable-experiment=non-nullable --fatal-warnings --fatal-infos test/
     - stage: analyze_and_format
       name: "Format"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: dartfmt -n --set-exit-if-changed .
     - stage: test
       name: "Vm Tests"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: pub run --enable-experiment=non-nullable test -p vm 
     - stage: test
       name: "Web Tests"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: pub run --enable-experiment=non-nullable test -p chrome
 

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.15.0-nullsafety.2
+
+Update for the 2.10 dev sdk.
+
 ## 1.15.0-nullsafety.1
 
 * Allow the <=2.9.10 stable sdks.

pubspec.yaml

@@ -1,11 +1,11 @@
 name: collection
-version: 1.15.0-nullsafety.1
+version: 1.15.0-nullsafety.2
 
 description: Collections and utilities functions and classes related to collections.
 homepage: https://www.github.com/dart-lang/collection
 
 environment:
-  sdk: '>=2.9.0-20.0 <=2.9.10'
+  sdk: '>=2.10.0-0 <2.10.0'
 
 dev_dependencies:
   pedantic: ^1.0.0