Test on DMD and also with -m32mscoff.

appveyor.yml

@@ -2,11 +2,14 @@ platform: x64
 environment:
  matrix:
   - DC: dmd
-    DVersion: 2.073.0
+    DVersion: 2.073.1
     arch: x64
   - DC: dmd
-    DVersion: 2.073.0
+    DVersion: 2.073.1
     arch: x86
+  - DC: dmd
+    DVersion: 2.073.1
+    arch: x86_mscoff
   - DC: dmd
     DVersion: 2.072.2
     arch: x64
@@ -65,7 +68,7 @@ install:
             }
         }
   - ps: SetUpDCompiler
-  - powershell -Command Invoke-WebRequest https://code.dlang.org/files/dub-1.2.0-windows-x86.zip -OutFile dub.zip
+  - powershell -Command Invoke-WebRequest https://code.dlang.org/files/dub-1.2.1-windows-x86.zip -OutFile dub.zip
   - 7z x dub.zip -odub > nul
   - set PATH=%CD%\%binpath%;%CD%\dub;%PATH%
   - dub --version
@@ -75,6 +78,10 @@ before_build:
             $env:compilersetupargs = "x86";
             $env:Darch = "x86";
           }
+        elseif($env:arch -eq "x86_mscoff"){
+            $env:compilersetupargs = "amd64";
+            $env:Darch = "x86_mscoff";
+        }
         elseif($env:arch -eq "x64"){
             $env:compilersetupargs = "amd64";
             $env:Darch = "x86_64";