message: travis: try xcode 11
diff: @@ -127,7 +127,7 @@ matrix:
  - env: CMAKE_BUILD_TYPE=Debug CMAKE_CXX_FLAGS=-fsanitize=address,undefined
  os: osx
  - osx_image: xcode10.2
  + osx_image: xcode11
  addons: &mac
  homebrew:
  packages:
  @@ -138,5 +138,5 @@ matrix:
  - env: CMAKE_BUILD_TYPE=Release
  os: osx
  - osx_image: xcode10.2
  + osx_image: xcode11
  addons: *mac
  