Update Travis configuration

Author: ignisf

.travis.yml

@@ -6,9 +6,9 @@ rvm:
   - rbx
 matrix:
   include:
-    - rvm: 2.2
+    - rvm: 2.3.2
       os: osx
-      osx_image: xcode8
+      osx_image: xcode8.2
     - rvm: 2.2
       os: osx
       osx_image: xcode7.3
@@ -20,7 +20,7 @@ matrix:
       osx_image: xcode7.3
     - rvm: system
       os: osx
-      osx_image: xcode8
+      osx_image: xcode8.2
     - rvm: ruby-2.3.1-clang
       env: CXX=clang++
     - rvm: 1.9.3
@@ -49,6 +49,7 @@ deploy:
   on:
     tags: true
     condition: $TRAVIS_OS_NAME = osx
+    all_branches: true
 cache:
   bundler: true
 notifications: