[master] 8293fb5 Bump xcode version

[Federico G. Schwindt]

commit 8293fb534379e90a685cfb42eddceb236dc086d6
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Sat May 13 17:10:00 2017 +0100

    Bump xcode version

diff --git a/.travis.yml b/.travis.yml
index 732d895..9fd348d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ matrix:
     sudo: false
     compiler: clang
   - os: osx
-    osx_image: xcode8.2
+    osx_image: xcode8.3
     compiler: clang
   allow_failures:
   - os: osx