Add php 7.3 and 7.4 to appveyor tests (nikic#145)

Author: TysonAndre

.appveyor.yml

@@ -27,67 +27,107 @@ cache:
         c:\build-cache -> .appveyor.yml
 
 environment:
-        BIN_SDK_VER: 2.1.1
+        BIN_SDK_VER: 2.2.0
         matrix:
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x64
                   VC: vc14
-                  PHP_VER: 7.0.27
+                  PHP_VER: 7.0.33
                   TS: 0
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x64
                   VC: vc14
-                  PHP_VER: 7.0.27
+                  PHP_VER: 7.0.33
                   TS: 1
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x86
                   VC: vc14
-                  PHP_VER: 7.0.27
+                  PHP_VER: 7.0.33
                   TS: 0
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x86
                   VC: vc14
-                  PHP_VER: 7.0.27
+                  PHP_VER: 7.0.33
                   TS: 1
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x64
                   VC: vc14
-                  PHP_VER: 7.1.13
+                  PHP_VER: 7.1.33
                   TS: 0
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x64
                   VC: vc14
-                  PHP_VER: 7.1.13
+                  PHP_VER: 7.1.33
                   TS: 1
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x86
                   VC: vc14
-                  PHP_VER: 7.1.13
+                  PHP_VER: 7.1.33
                   TS: 0
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
                   ARCH: x86
                   VC: vc14
-                  PHP_VER: 7.1.13
+                  PHP_VER: 7.1.33
                   TS: 1
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
                   ARCH: x64
                   VC: vc15
-                  PHP_VER: 7.2.1
+                  PHP_VER: 7.2.26
                   TS: 0
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
                   ARCH: x64
                   VC: vc15
-                  PHP_VER: 7.2.1
+                  PHP_VER: 7.2.26
                   TS: 1
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
                   ARCH: x86
                   VC: vc15
-                  PHP_VER: 7.2.1
+                  PHP_VER: 7.2.26
                   TS: 0
                 - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
                   ARCH: x86
                   VC: vc15
-                  PHP_VER: 7.2.1
+                  PHP_VER: 7.2.26
+                  TS: 1
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x64
+                  VC: vc15
+                  PHP_VER: 7.3.13
+                  TS: 0
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x64
+                  VC: vc15
+                  PHP_VER: 7.3.13
+                  TS: 1
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x86
+                  VC: vc15
+                  PHP_VER: 7.3.13
+                  TS: 0
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x86
+                  VC: vc15
+                  PHP_VER: 7.3.13
+                  TS: 1
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x64
+                  VC: vc15
+                  PHP_VER: 7.4.1
+                  TS: 0
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x64
+                  VC: vc15
+                  PHP_VER: 7.4.1
+                  TS: 1
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x86
+                  VC: vc15
+                  PHP_VER: 7.4.1
+                  TS: 0
+                - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+                  ARCH: x86
+                  VC: vc15
+                  PHP_VER: 7.4.1
                   TS: 1
 
 build_script: