From b9fecd10303567d651cded44f511e76f9ade373e Mon Sep 17 00:00:00 2001
From: Steffen Schuemann <s.schuemann@pobox.com>
Date: Tue, 17 Nov 2020 08:08:52 +0100
Subject: [PATCH] refs #80, enabled Appveyor build on VS 2013 to test
 compatibility.

---
 .appveyor.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.appveyor.yml b/.appveyor.yml
index cf986f7..0350e97 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,5 +1,11 @@
 environment:
   matrix:
+    - platform: x64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+      generator: "Visual Studio 12 2013 Win64"
+      compiler: msvc
+      configuration: Release
+
     - platform: x86
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       generator: "Visual Studio 14 2015"