Change the travis Xcode image

allenhumphreys · allenhumphreys · commit 5b55e1b997d6 · 2019-10-01T15:02:33.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 os: osx
-osx_image: xcode10.2
+osx_image: xcode11
 before_install:
   - brew update
   - brew outdated swiftlint || brew upgrade swiftlint
