Deploy only when building tag

Author: Jos Hickson

appveyor.yml

@@ -1,7 +1,5 @@
 image: Visual Studio 2017
 
-skip_tags: true
-
 install:
   - cinst msys2
   - set PATH=C:\msys64\usr\bin;%PATH%
@@ -24,5 +22,4 @@ deploy:
   api_key:
     secure: vrX7uDkbJriNmYo0JBoY5/UZu22Cxx/a/omaF+X824kAMFvNXODTFPqXqT3le8Nu
   on:
-    branch: 
-    - /release\/[0-9]\.[0-9]/
+    appveyor_repo_tag: true