message: Travis: switch to clang 7
diff: @@ -80,16 +80,16 @@ matrix:
  - env: CMAKE_CXX_COMPILER=g++-8 CMAKE_BUILD_TYPE=Release
  addons: *gcc8
  - - env: CMAKE_CXX_COMPILER=clang++-6.0 CMAKE_BUILD_TYPE=Debug
  - addons: &clang6
  + - env: CMAKE_CXX_COMPILER=clang++-7 CMAKE_BUILD_TYPE=Debug
  + addons: &clang7
  apt:
  sources:
  - *default_sources
  - - llvm-toolchain-trusty-6.0
  + - llvm-toolchain-trusty-7
  packages:
  - *default_packages
  - - clang-6.0
  + - clang-7
  - g++-8
  - - env: CMAKE_CXX_COMPILER=clang++-6.0 CMAKE_BUILD_TYPE=Release
  - addons: *clang6
  + - env: CMAKE_CXX_COMPILER=clang++-7 CMAKE_BUILD_TYPE=Release
  + addons: *clang7
  