Use MSVC 2017 on appveyor

ianthomas23 · ianthomas23 · commit 2f8a3b0b2052 · 2022-12-02T10:09:16.000Z
diff --git a/.appveyor.yml b/.appveyor.yml
@@ -11,6 +11,8 @@ branches:
 
 clone_depth: 50
 
+image: Visual Studio 2017
+
 environment:
 
   global:
