🍎 removed Xcode 8.0 due to repeated problems

.travis.yml

@@ -179,9 +179,9 @@ matrix:
     env: LLVM_VERSION=3.7.1
     compiler: clang
 
-  - os: linux
-    env: LLVM_VERSION=3.8.0
-    compiler: clang
+  #- os: linux
+  #  env: LLVM_VERSION=3.8.0
+  #  compiler: clang
 
   - os: linux
     env: LLVM_VERSION=3.8.1

README.md

@@ -430,7 +430,7 @@ The following compilers are currently used in continuous integration at [Travis]
 | Clang Xcode 7.1 | Darwin Kernel Version 14.5.0 (OSX 10.10.5) | Apple LLVM version 7.0.0 (clang-700.1.76) |
 | Clang Xcode 7.2 | Darwin Kernel Version 15.0.0 (OSX 10.10.5) | Apple LLVM version 7.0.2 (clang-700.1.81) |
 | Clang Xcode 7.3 | Darwin Kernel Version 15.0.0 (OSX 10.10.5) | Apple LLVM version 7.3.0 (clang-703.0.29) |
-| Clang Xcode 8.0 | Darwin Kernel Version 15.6.0 (OSX 10.11.6) | Apple LLVM version 8.0.0 (clang-800.0.38) |
+| Clang Xcode 8.1 | Darwin Kernel Version 16.1.0 (macOS 10.12.1) | Apple LLVM version 8.0.0 (clang-800.0.42.1) |
 | Visual Studio 14 2015 | Windows Server 2012 R2 (x64) | Microsoft (R) Build Engine version 14.0.25123.0 |