update ci

.appveyor.yml

@@ -2,6 +2,7 @@ version: "{branch} #{build}"
 
 image:
   - Visual Studio 2017
+  - Visual Studio 2019
 
 platform:
   - Win32
@@ -14,15 +15,11 @@ configuration:
 build:
   parallel: true
 
-environment:
-  matrix:
-    - GENERATOR: "Visual Studio 15 2017"
-
 before_build:
   - if exist build RMDIR /S /Q build
   - if not exist build mkdir build
   - cd build
-  - cmake -G "%GENERATOR%" -A %PLATFORM% ..
+  - cmake -A %PLATFORM% ..
 
 build_script:
   - cmake --build . --config %CONFIGURATION%

.travis.yml

@@ -6,6 +6,28 @@ language: cpp
 
 matrix:
   include:
+    - os: linux
+      compiler: g++
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-7
+      env:
+        - CXX_COMPILER=g++-7 CC_COMPILER=gcc-7
+
+    - os: linux
+      compiler: g++
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-8
+      env:
+        - CXX_COMPILER=g++-8 CC_COMPILER=gcc-8
+
     - os: linux
       compiler: g++
       addons:
@@ -69,6 +91,12 @@ matrix:
       env:
         - CXX_COMPILER=clang++-8 CC_COMPILER=clang-8
 
+    - os: osx
+      compiler: clang++
+      osx_image: xcode9.4
+      env:
+        - CXX_COMPILER=clang++ CC_COMPILER=clang
+
     - os: osx
       compiler: clang++
       osx_image: xcode10.3